The media player can be controlled using voice control, the right-side steering wheel keypad or the center display.
Volume - turn the knob under the center display or tap 
on the right-side steering wheel keypad to raise or lower the volume.
Play/pause - tap the image for the track you would like to play, or press the button below the center display or 
on the right-side steering wheel keypad.
Changing track/song - tap the desired track in the center display, or press 
or 
below the center display or on the right-side steering wheel keypad.
Rewinding/fast-forwarding - tap the time axis in the center display and drag it sideways, or press and hold or below the center display or on the right-side steering wheel keypad.
Changing media source - select from among previous sources in the app, tap the desired app in App view or use the right-side steering wheel keypad to select the app in the app menu 
.
Library - tap the button to play from the library.
Shuffle - tap the button to play tracks in a random order.
Similar - tap the button to use Gracenote to search for similar music on the USB device and create a playlist from the music found. The playlist can contain up to 50 tracks.
Change device - tap the button to toggle between USB devices when more than one is connected.