1. A portable electronic device, comprising: a touch-sensitive display, the touch-sensitive display configured to separately display sets of media player controls, including a first predefined set of media player controls and a second predefined set of media player controls; one or more processors; memory; and one 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: displaying the first predefined set of media player controls while playing a first media item; detecting gestures on the touch-sensitive display while displaying the first predefined set of media player controls and playing the first media item; in response to detecting a first gesture, of the detected gestures, on a first media player control in the first predefined set of media player controls, activating the first media player control and controlling playing of the first media item in accordance with activation of the first media player control; and, in response to detecting a second gesture, of the detected gestures, the second gesture distinct from the first gesture, replacing display of the first predefined set of media player controls with display of the second predefined set of media player controls and maintaining playing of the first media item.