Youtube-DJ - Mix YouTube songs together
Heartbeat - Listen to music with your friends together, on Spotify
Pacemaker - Create and share mixtapes with friends
Festify - Festify is a free Spotify-powered app that lets your guests choose which music should be played...
djay Pro for iPad - djay Pro provides a complete toolkit for performing DJs.
BeatSense - Discover great music hand-picked by real people, in a single click. FREE and in real-time!