Festify - Festify is a free Spotify-powered app that lets your guests choose which music should be played...
Plexamp - A small music player with a number of unique features
Heartbeat - Listen to music with your friends together, on Spotify
Headset - Personal music player for Youtube and Reddit
Join My Playlist - Listen to music live together with your friends in Spotify.
Poolsuite™ - The super-summer music player