Join My Playlist - Listen to music live together with your friends in Spotify.
Metastream - Watch streaming media with friends
Heartbeat - Listen to music with your friends together, on Spotify
Watch2Gether - Watch2Gether is an app that allows multiple people to watch the same content simultaneously and interact with each other while watching.
Partyhero - Pass your friends the aux!
Kosmi - Digital Hangouts Reinvented