TapTunes - With TapTunes, you will experience your music collection like never before.
Spotify - Map shows when two people play same song at same time
Music Player Daemon - Music Player Daemon is a flexible, powerful, server-side application for playing music.
Deezer - Deezer is a music streaming app created in France. It is available in 180 counties and gets 16 million users a month. 6 million of the users have paid subscriptions. Read more about Deezer.
MakeMePulse - Amazing audio visual experiment.
Last.fm - The world's largest online music service. Listen online, find out more about your favourite artists, and get music recommendations, only at Last.fm