If you've got just about any kind of tablet computer you might want to take a look at the AirTurn or PageFlip bluetooth pedals. I put all my backing tracks on my Samsung pad, clip it to my mic stand, and use my AirTurn BT-105 to not only start and stop songs, but to also choose playlists and control volume and mute. All hands free. Both are very good products. I just went with AirTurn 'cause I got it for cheap at NAMM last January.