On my keyboard I have the buttons: Prev Track, Next Track, Volume up and down, Play, pause, and mute. Now, the volume up and down, as well as the mute buttons work. The only problem is the prev track, next track, play, pause and stop buttons don't work with mediacar. It would be a great addition if you would allow those that have keyboards with these buttons to use these to switch tracks, play/pause, and stop.