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In some embodiments, a computer-implemented method is performed at a portable electronic device with a touch screen display while the portable electronic device is in a user-interface locked mode of a workout monitoring application with the touch screen display turned off. The method includes: monit

In some embodiments, a computer-implemented method is performed at a portable electronic device with a touch screen display while the portable electronic device is in a user-interface locked mode of a workout monitoring application with the touch screen display turned off. The method includes: monitoring a workout by a user with the workout monitoring application; detecting an interaction by the user with a first physical button on the portable electronic device; and determining whether the detected interaction by the user with the first physical button corresponds to a first predefined action. The method further includes, in response to determining that the interaction by the user with the first physical button corresponds to the first predefined action; turning on the touch screen display; providing an audio status report of the workout by the user; displaying a workout pause icon; and displaying an unlock image.

대표청구항 ▼

1. A computer-implemented method, comprising: at a portable electronic device with a touch screen display: while the portable electronic device is in a user-interface locked mode of a workout monitoring application with the touch screen display turned off: monitoring a workout by a user with the wor

1. A computer-implemented method, comprising: at a portable electronic device with a touch screen display: while the portable electronic device is in a user-interface locked mode of a workout monitoring application with the touch screen display turned off: monitoring a workout by a user with the workout monitoring application;detecting an interaction by the user with a first physical button on the portable electronic device;determining whether the detected interaction by the user with the first physical button corresponds to a first predefined action;in response to determining that the interaction by the user with the first physical button corresponds to the first predefined action: turning on the touch screen display;displaying a workout pause icon on the touch screen display; anddisplaying an unlock image on the touch screen display, wherein the unlock image is a graphical user interface object with which the user interacts in order to change the workout monitoring application to a user-interface unlocked mode; andwhile the portable electronic device is in the user-interface locked mode of the workout monitoring application with the touch screen display turned on: monitoring the workout by the user with the workout monitoring application;playing an audio file from a playlist with a plurality of audio files;detecting a finger swipe gesture on the touch screen display;in response to detecting the finger swipe gesture: terminating play of the audio file and initiating play of a next audio file from the playlist if the detected finger gesture is in a first horizontal direction, relative to the device, across the touch screen display;terminating play of the audio file and initiating play of the next audio file from the playlist if the detected finger gesture is in a first vertical direction, relative to the device, across the touch screen display;terminating play of the audio file and initiating play of a previous audio file from the playlist if the detected finger gesture is in a second horizontal direction, relative to the device, across the touch screen display, the second horizontal direction being opposite the first horizontal direction; andterminating play of the audio file and initiating play of the previous audio file from the playlist if the detected finger gesture is in a second vertical direction, relative to the device, across the touch screen display, the second vertical direction being opposite the first vertical direction. 2. The computer-implemented method of claim 1, including: providing an audio status report of the workout by the user in response to determining that the interaction by the user with the first physical button corresponds to the first predefined action. 3. The computer-implemented method of claim 1, including: determining whether the detected interaction by the user with the first physical button corresponds to a second predefined action, the second predefined action being different from the first predefined action;in response to determining that the interaction by the user with the first physical button corresponds to the second predefined action: turning on the touch screen display;displaying a powersong initiation icon on the touch screen display; anddisplaying the unlock image on the touch screen display. 4. The computer-implemented method of claim 3, including: providing an audio status report of the workout by the user in response to determining that the interaction by the user with the first physical button corresponds to the second predefined action. 5. The computer-implemented method of claim 3, wherein the second predefined action is a double activation of the first physical button in a predefined time period. 6. The computer-implemented method of claim 3, including: while the portable electronic device is in the user-interface locked mode of the workout monitoring application with the touch screen display turned on: detecting a finger gesture on the powersong initiation icon displayed on the touch screen display; andin response to detecting the finger gesture on the powersong initiation icon, initiating playing of an audio file previously selected by the user as the user's powersong. 7. The computer-implemented method of claim 1, wherein monitoring the workout includes receiving data from a sensor that is separate from the portable electronic device. 8. The computer-implemented method of claim 1, including, while the portable electronic device is in the user-interface locked mode of the workout monitoring application with the touch screen display turned off, playing an audio file from a playlist with a plurality of audio files. 9. The computer-implemented method of claim 1, wherein the first predefined action is a single activation of the first physical button in a predefined time period. 10. The computer-implemented method of claim 1, including: detecting activation of the first physical button while an audio status report is being provided; andin response to detecting activation of the first physical button while the audio status report is being provided, ceasing to provide the audio status report. 11. The computer-implemented method of claim 1, including: while the portable electronic device is in the user-interface locked mode of the workout monitoring application with the touch screen display turned off: detecting activation of a second physical button on the portable electronic device, wherein the second physical button is different from the first physical button;in response to detecting activation of a second physical button: turning on the touch screen display without providing an audio status report of the workout by the user;displaying the workout pause icon on the touch screen display; anddisplaying the unlock image on the touch screen display. 12. The computer-implemented method of claim 1, including: while the portable electronic device is in the user-interface locked mode of the workout monitoring application with the touch screen display turned on: detecting a finger gesture on the workout pause icon; andin response to detecting the finger gesture on the workout pause icon, pausing monitoring of the workout by the workout monitoring application. 13. The computer-implemented method of claim 1, wherein the portable electronic device contains one or more accelerometers, including: detecting with the one or more accelerometers a first movement of the portable electronic device;determining whether the first movement is due to a first predetermined type of user gesture exerted on the portable electronic device; andinitiating play of a powersong audio file of the user if the movement is due to the first predetermined type of user gesture. 14. The computer-implemented method of claim 1, wherein the portable electronic device contains one or more accelerometers, including: detecting with the one or more accelerometers a movement of the portable electronic device;determining whether the movement is due to a second predetermined type of user gesture exerted on the portable electronic device; andtoggling between monitoring the workout and pausing monitoring of the workout if the movement is due to the second predetermined type of user gesture. 15. The computer-implemented method of claim 1, including: while the portable electronic device is in the user-interface locked mode of the workout monitoring application with the touch screen display turned on: detecting a finger contact with the unlock image and subsequent movement of the finger contact on the touch screen display;moving the unlock image on the touch screen display in accordance with the detected movement of the finger contact;transitioning the workout monitoring application to a user-interface unlocked mode and displaying a user interface in the workout monitoring application if the detected movement of the finger contact corresponds to a predefined gesture; andmaintaining the device in the user-interface locked mode of the workout monitoring application if the detected movement of the finger contact does not correspond to the predefined gesture. 16. The computer-implemented method of claim 1, including: while the portable electronic device is in a user-interface unlocked mode and while monitoring the workout by the user with the workout monitoring application: displaying on the touch screen display a user interface for the workout monitoring application;detecting activation of a menu icon or menu button during display of the user interface for the workout monitoring application;in response to detecting activation of the menu icon or menu button during display of the user interface for the workout monitoring application, replacing the user interface for the workout monitoring application with a menu of application icons;maintaining monitoring of the workout by the user while displaying the menu of application icons on the touch screen display;detecting a finger gesture on an application icon in the menu of application icons other than an icon for the workout monitoring application;in response to detecting a finger gesture on the application icon in the menu of application icons other than the icon for the workout monitoring application, displaying a user interface for a corresponding application on the touch screen display while continuing to maintain monitoring of the workout by the user, wherein the user interface for the corresponding application includes a return-to-workout-monitoring-application icon that is not displayed in the user interface for the corresponding application when there is no ongoing monitoring of the workout by the user;detecting a finger gesture on the return-to-workout-monitoring-application icon; andin response to detecting the finger gesture on the return-to-workout-monitoring-application icon, replacing display of the user interface for the corresponding application with a respective user interface for the workout monitoring application while continuing to monitor the workout by the user. 17. The computer-implemented method of claim 1, including transitioning the portable electronic device to a user-interface locked mode of the workout monitoring application upon expiration of a pre-determined time period without detecting user input to the device. 18. A portable electronic device, comprising: a touch screen display;one or more processors;memory; andone or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including instructions for:while the portable electronic device is in a user-interface locked mode of a workout monitoring application with the touch screen display turned off: monitoring a workout by a user with the workout monitoring application;detecting an interaction by the user with a first physical button on the portable electronic device;determining whether the detected interaction by the user with the first physical button corresponds to a first predefined action;in response to determining that the interaction by the user with the first physical button corresponds to the first predefined action: turning on the touch screen display;displaying a workout pause icon on the touch screen display; anddisplaying an unlock image on the touch screen display, wherein the unlock image is a graphical user interface object with which the user interacts in order to change the workout monitoring application to a user-interface unlocked mode; andwhile the portable electronic device is in the user-interface locked mode of the workout monitoring application with the touch screen display turned on: monitoring the workout by the user with the workout monitoring application;playing an audio file from a playlist with a plurality of audio files;detecting a finger swipe gesture on the touch screen display;in response to detecting the finger swipe gesture: terminating play of the audio file and initiating play of a next audio file from the playlist if the detected finger gesture is in a first horizontal direction, relative to the device, across the touch screen display;terminating play of the audio file and initiating play of the next audio file from the playlist if the detected finger gesture is in a first vertical direction, relative to the device, across the touch screen display;terminating play of the audio file and initiating play of a previous audio file from the playlist if the detected finger gesture is in a second horizontal direction, relative to the device, across the touch screen display, the second horizontal direction being opposite the first horizontal direction; andterminating play of the audio file and initiating play of the previous audio file from the playlist if the detected finger gesture is in a second vertical direction, relative to the device, across the touch screen display, the second vertical direction being opposite the first vertical direction. 19. The device of claim 18, including instructions for: providing an audio status report of the workout by the user in response to determining that the interaction by the user with the first physical button corresponds to the first predefined action. 20. The device of claim 18, including instructions for: determining whether the detected interaction by the user with the first physical button corresponds to a second predefined action, the second predefined action being different from the first predefined action;in response to determining that the interaction by the user with the first physical button corresponds to the second predefined action: turning on the touch screen display;displaying a powersong initiation icon on the touch screen display; anddisplaying the unlock image on the touch screen display. 21. The device of claim 20, including instructions for: providing an audio status report of the workout by the user in response to determining that the interaction by the user with the first physical button corresponds to the second predefined action. 22. The device of claim 20, including instructions for, wherein the second predefined action is a double activation of the first physical button in a predefined time period. 23. The device of claim 20, including instructions for: while the portable electronic device is in the user-interface locked mode of the workout monitoring application with the touch screen display turned on: detecting a finger gesture on the powersong initiation icon displayed on the touch screen display; andin response to detecting the finger gesture on the powersong initiation icon, initiating playing of an audio file previously selected by the user as the user's powersong. 24. The device of claim 18, wherein monitoring the workout includes receiving data from a sensor that is separate from the portable electronic device. 25. The device of claim 18, including instructions for, while the portable electronic device is in the user-interface locked mode of the workout monitoring application with the touch screen display turned off, playing an audio file from a playlist with a plurality of audio files. 26. The device of claim 18, wherein the first predefined action is a single activation of the first physical button in a predefined time period. 27. The device of claim 18, including instructions for: detecting activation of the first physical button while an audio status report is being provided; andin response to detecting activation of the first physical button while the audio status report is being provided, ceasing to provide the audio status report. 28. The device of claim 18, including instructions for: while the portable electronic device is in the user-interface locked mode of the workout monitoring application with the touch screen display turned off: detecting activation of a second physical button on the portable electronic device, wherein the second physical button is different from the first physical button;in response to detecting activation of a second physical button: turning on the touch screen display without providing an audio status report of the workout by the user;displaying the workout pause icon on the touch screen display; anddisplaying the unlock image on the touch screen display. 29. The device of claim 18, including instructions for: while the portable electronic device is in the user-interface locked mode of the workout monitoring application with the touch screen display turned on: detecting a finger gesture on the workout pause icon; andin response to detecting the finger gesture on the workout pause icon, pausing monitoring of the workout by the workout monitoring application. 30. The device of claim 18, wherein the portable electronic device contains one or more accelerometers, including instructions for: detecting with the one or more accelerometers a first movement of the portable electronic device;determining whether the first movement is due to a first predetermined type of user gesture exerted on the portable electronic device; andinitiating play of a powersong audio file of the user if the movement is due to the first predetermined type of user gesture. 31. The device of claim 18, wherein the portable electronic device contains one or more accelerometers, including instructions for: detecting with the one or more accelerometers a movement of the portable electronic device;determining whether the movement is due to a second predetermined type of user gesture exerted on the portable electronic device; andtoggling between monitoring the workout and pausing monitoring of the workout if the movement is due to the second predetermined type of user gesture. 32. The device of claim 18, including instructions for: while the portable electronic device is in the user-interface locked mode of the workout monitoring application with the touch screen display turned on: detecting a finger contact with the unlock image and subsequent movement of the finger contact on the touch screen display;moving the unlock image on the touch screen display in accordance with the detected movement of the finger contact;transitioning the workout monitoring application to a user-interface unlocked mode and displaying a user interface in the workout monitoring application if the detected movement of the finger contact corresponds to a predefined gesture; andmaintaining the device in the user-interface locked mode of the workout monitoring application if the detected movement of the finger contact does not correspond to the predefined gesture. 33. The device of claim 18, including instructions for: while the portable electronic device is in a user-interface unlocked mode and while monitoring the workout by the user with the workout monitoring application: displaying on the touch screen display a user interface for the workout monitoring application;detecting activation of a menu icon or menu button during display of the user interface for the workout monitoring application;in response to detecting activation of the menu icon or menu button during display of the user interface for the workout monitoring application, replacing the user interface for the workout monitoring application with a menu of application icons;maintaining monitoring of the workout by the user while displaying the menu of application icons on the touch screen display;detecting a finger gesture on an application icon in the menu of application icons other than an icon for the workout monitoring application;in response to detecting a finger gesture on the application icon in the menu of application icons other than the icon for the workout monitoring application, displaying a user interface for a corresponding application on the touch screen display while continuing to maintain monitoring of the workout by the user, wherein the user interface for the corresponding application includes a return-to-workout-monitoring-application icon that is not displayed in the user interface for the corresponding application when there is no ongoing monitoring of the workout by the user;detecting a finger gesture on the return-to-workout-monitoring-application icon; andin response to detecting the finger gesture on the return-to-workout-monitoring-application icon, replacing display of the user interface for the corresponding application with a respective user interface for the workout monitoring application while continuing to monitor the workout by the user. 34. The device of claim 18, including instructions for transitioning the portable electronic device to a user-interface locked mode of the workout monitoring application upon expiration of a pre-determined time period without detecting user input to the device. 35. A non-transitory computer readable storage medium having stored therein instructions, which when executed by a portable electronic device with a touch screen display, cause the device to: while the portable electronic device is in a user-interface locked mode of a workout monitoring application with the touch screen display turned off: monitor a workout by a user with the workout monitoring application;detect an interaction by the user with a first physical button on the portable electronic device;determine whether the detected interaction by the user with the first physical button corresponds to a first predefined action;in response to determining that the interaction by the user with the first physical button corresponds to the first predefined action: turn on the touch screen display;display a workout pause icon on the touch screen display; anddisplay an unlock image on the touch screen display, wherein the unlock image is a graphical user interface object with which the user interacts in order to change the workout monitoring application to a user-interface unlocked mode; andwhile the portable electronic device is in the user-interface locked mode of the workout monitoring application with the touch screen display turned on: monitor the workout by the user with the workout monitoring application;play an audio file from a playlist with a plurality of audio files;detect a finger swipe gesture on the touch screen display;in response to detecting the finger swipe gesture: terminate play of the audio file and initiating play of a next audio file from the playlist if the detected finger gesture is in a first horizontal direction, relative to the device, across the touch screen display;terminate play of the audio file and initiating play of the next audio file from the playlist if the detected finger gesture is in a first vertical direction, relative to the device, across the touch screen display;terminate play of the audio file and initiating play of a previous audio file from the playlist if the detected finger gesture is in a second horizontal direction, relative to the device, across the touch screen display, the second horizontal direction being opposite the first horizontal direction; andterminate play of the audio file and initiating play of the previous audio file from the playlist if the detected finger gesture is in a second vertical direction, relative to the device, across the touch screen display, the second vertical direction being opposite the first vertical direction. 36. The computer readable storage medium of claim 35, including instructions which cause the device to: provide an audio status report of the workout by the user in response to determining that the interaction by the user with the first physical button corresponds to the first predefined action. 37. The computer readable storage medium of claim 35, including instructions which cause the device to: determine whether the detected interaction by the user with the first physical button corresponds to a second predefined action, the second predefined action being different from the first predefined action;in response to determining that the interaction by the user with the first physical button corresponds to the second predefined action: turn on the touch screen display;display a powersong initiation icon on the touch screen display; anddisplay the unlock image on the touch screen display. 38. The computer readable storage medium of claim 37, including instructions which cause the device to: provide an audio status report of the workout by the user in response to determining that the interaction by the user with the first physical button corresponds to the second predefined action. 39. The computer readable storage medium of claim 37, wherein the second predefined action is a double activation of the first physical button in a predefined time period. 40. The computer readable storage medium of claim 37, including instructions which cause the device to: while the portable electronic device is in the user-interface locked mode of the workout monitoring application with the touch screen display turned on: detect a finger gesture on the powersong initiation icon displayed on the touch screen display; andin response to detecting the finger gesture on the powersong initiation icon, initiate playing of an audio file previously selected by the user as the user's powersong. 41. The computer readable storage medium of claim 35, wherein monitoring the workout includes receiving data from a sensor that is separate from the portable electronic device. 42. The computer readable storage medium of claim 35, including instructions which cause the device to, while the portable electronic device is in the user-interface locked mode of the workout monitoring application with the touch screen display turned off, play an audio file from a playlist with a plurality of audio files. 43. The computer readable storage medium of claim 35, wherein the first predefined action is a single activation of the first physical button in a predefined time period. 44. The computer readable storage medium of claim 35, including instructions which cause the device to: detect activation of the first physical button while an audio status report is being provided; andin response to detecting activation of the first physical button while the audio status report is being provided, cease to provide the audio status report. 45. The computer readable storage medium of claim 35, including instructions which cause the device to: while the portable electronic device is in the user-interface locked mode of the workout monitoring application with the touch screen display turned off: detect activation of a second physical button on the portable electronic device, wherein the second physical button is different from the first physical button;in response to detecting activation of a second physical button: turn on the touch screen display without providing an audio status report of the workout by the user;display the workout pause icon on the touch screen display; anddisplay the unlock image on the touch screen display. 46. The computer readable storage medium of claim 35, including instructions which cause the device to: while the portable electronic device is in the user-interface locked mode of the workout monitoring application with the touch screen display turned on: detect a finger gesture on the workout pause icon; andin response to detecting the finger gesture on the workout pause icon, pause monitoring of the workout by the workout monitoring application. 47. The computer readable storage medium of claim 35, wherein the portable electronic device contains one or more accelerometers, including instructions which cause the device to: detect with the one or more accelerometers a first movement of the portable electronic device;determine whether the first movement is due to a first predetermined type of user gesture exerted on the portable electronic device; andinitiate play of a powersong audio file of the user if the movement is due to the first predetermined type of user gesture. 48. The computer readable storage medium of claim 35, wherein the portable electronic device contains one or more accelerometers, including instructions which cause the device to: detect with the one or more accelerometers a movement of the portable electronic device;determine whether the movement is due to a second predetermined type of user gesture exerted on the portable electronic device; andtoggle between monitoring the workout and pausing monitoring of the workout if the movement is due to the second predetermined type of user gesture. 49. The computer readable storage medium of claim 35, including instructions which cause the device to: while the portable electronic device is in the user-interface locked mode of the workout monitoring application with the touch screen display turned on: detect a finger contact with the unlock image and subsequent movement of the finger contact on the touch screen display;move the unlock image on the touch screen display in accordance with the detected movement of the finger contact;transition the workout monitoring application to a user-interface unlocked mode and displaying a user interface in the workout monitoring application if the detected movement of the finger contact corresponds to a predefined gesture; andmaintain the device in the user-interface locked mode of the workout monitoring application if the detected movement of the finger contact does not correspond to the predefined gesture. 50. The computer readable storage medium of claim 35, including instructions which cause the device to: while the portable electronic device is in a user-interface unlocked mode and while monitoring the workout by the user with the workout monitoring application: display on the touch screen display a user interface for the workout monitoring application;detect activation of a menu icon or menu button during display of the user interface for the workout monitoring application;in response to detecting activation of the menu icon or menu button during display of the user interface for the workout monitoring application, replace the user interface for the workout monitoring application with a menu of application icons;maintain monitoring of the workout by the user while displaying the menu of application icons on the touch screen display;detect a finger gesture on an application icon in the menu of application icons other than an icon for the workout monitoring application;in response to detecting a finger gesture on the application icon in the menu of application icons other than the icon for the workout monitoring application, display a user interface for a corresponding application on the touch screen display while continuing to maintain monitoring of the workout by the user, wherein the user interface for the corresponding application includes a return-to-workout-monitoring-application icon that is not displayed in the user interface for the corresponding application when there is no ongoing monitoring of the workout by the user;detect a finger gesture on the return-to-workout-monitoring-application icon; andin response to detecting the finger gesture on the return-to-workout-monitoring-application icon, replace display of the user interface for the corresponding application with a respective user interface for the workout monitoring application while continuing to monitor the workout by the user. 51. The computer readable storage medium of claim 35, including instructions which cause the device to transition the portable electronic device to a user-interface locked mode of the workout monitoring application upon expiration of a pre-determined time period without detecting user input to the device. 52. A graphical user interface on a portable electronic device with a touch screen display, a memory, and one or more processors to execute one or more programs stored in the memory, the graphical user interface comprising: a workout pause icon on the touch screen display; andan unlock image on the touch screen display, wherein the unlock image is a graphical user interface object with which the user interacts in order to change a workout monitoring application to a user-interface unlocked mode;wherein, while the portable electronic device is in a user-interface locked mode of a workout monitoring application with the touch screen display turned off: a workout by a user is monitored with the workout monitoring application;an interaction by the user with a first physical button on the portable electronic device is detected;whether the detected interaction by the user with the first physical button corresponds to a first predefined action is determined;in response to determining that the interaction by the user with the first physical button corresponds to the first predefined action: the touch screen display is turned on;the workout pause icon is displayed on the touch screen display; andthe unlock image is displayed on the touch screen display; andwhile the portable electronic device is in the user-interface locked mode of the workout monitoring application with the touch screen display turned on:monitoring the workout by the user with the workout monitoring application;playing an audio file from a playlist with a plurality of audio files;detecting a finger swipe gesture on the touch screen display;in response to detecting the finger swipe gesture: play of the audio file is terminated and play of a next audio file from the playlist is initiated if the detected finger gesture is in a first horizontal direction, relative to the device, across the touch screen display;play of the audio file is terminated and play of the next audio file from the playlist is initiated if the detected finger gesture is in a first vertical direction, relative to the device, across the touch screen display;play of the audio file is terminated and play of a previous audio file from the playlist is initiated if the detected finger gesture is in a second horizontal direction, relative to the device, across the touch screen display, the second horizontal direction being opposite the first horizontal direction; andplay of the audio file is terminated and play of the previous audio file from the playlist is initiated if the detected finger gesture is in a second vertical direction, relative to the device, across the touch screen display, the second vertical direction being opposite the first vertical direction. 53. A computer-implemented method, comprising: at a portable electronic device with a touch screen display: while the portable electronic device is in a user-interface locked mode of a workout monitoring application with the touch screen display turned on: monitoring a workout by a user with the workout monitoring application;playing an audio file from a playlist with a plurality of audio files;detecting a finger swipe gesture on the touch screen display;in response to detecting the finger swipe gesture: terminating play of the audio file and initiating play of a next audio file from the playlist if the detected finger gesture is in a first horizontal direction, relative to the device, across the touch screen display;terminating play of the audio file and initiating play of the next audio file from the playlist if the detected finger gesture is in a first vertical direction, relative to the device, across the touch screen display;terminating play of the audio file and initiating play of a previous audio file from the playlist if the detected finger gesture is in a second horizontal direction, relative to the device, across the touch screen display, the second horizontal direction being opposite the first horizontal direction; andterminating play of the audio file and initiating play of the previous audio file from the playlist if the detected finger gesture is in a second vertical direction, relative to the device, across the touch screen display, the second vertical direction being opposite the first vertical direction. 54. A portable electronic device, comprising: a touch screen display;one or more processors;memory; andone or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including instructions for:while the portable electronic device is in a user-interface locked mode of a workout monitoring application with the touch screen display turned on: monitoring a workout by a user with the workout monitoring application;playing an audio file from a playlist with a plurality of audio files;detecting a finger swipe gesture on the touch screen display;in response to detecting the finger swipe gesture: terminating play of the audio file and initiating play of a next audio file from the playlist if the detected finger gesture is in a first horizontal direction, relative to the device, across the touch screen display;terminating play of the audio file and initiating play of the next audio file from the playlist if the detected finger gesture is in a first vertical direction, relative to the device, across the touch screen display;terminating play of the audio file and initiating play of a previous audio file from the playlist if the detected finger gesture is in a second horizontal direction, relative to the device, across the touch screen display, the second horizontal direction being opposite the first horizontal direction; andterminating play of the audio file and initiating play of the previous audio file from the playlist if the detected finger gesture is in a second vertical direction, relative to the device, across the touch screen display, the second vertical direction being opposite the first vertical direction. 55. A non-transitory computer readable storage medium having stored therein instructions, which when executed by a portable electronic device with a touch screen display, cause the device to: while the portable electronic device is in a user-interface locked mode of a workout monitoring application with the touch screen display turned on: monitor a workout by a user with the workout monitoring application;play an audio file from a playlist with a plurality of audio files;detect a finger swipe gesture on the touch screen display;in response to detecting the finger swipe gesture: terminate play of the audio file and initiate play of a next audio file from the playlist if the detected finger gesture is in a first horizontal direction, relative to the device, across the touch screen display;terminate play of the audio file and initiate play of the next audio file from the playlist if the detected finger gesture is in a first vertical direction, relative to the device, across the touch screen display;terminate play of the audio file and initiate play of a previous audio file from the playlist if the detected finger gesture is in a second horizontal direction, relative to the device, across the touch screen display, the second horizontal direction being opposite the first horizontal direction; andterminate play of the audio file and initiate play of the previous audio file from the playlist if the detected finger gesture is in a second vertical direction, relative to the device, across the touch screen display, the second vertical direction being opposite the first vertical direction.