Wonder.fm - Discover new music. New site by We Are Hunted co-founder.
SOUNDS - Discover music with friends
CLiGGO MUSIC - CLiGGO MUSIC provides free music enjoyment on your pc, smart phone or tablet.
Spotify - Map shows when two people play same song at same time
avant.fm - Avant.fm provides a customizable, listenable feed of new releases from the best indie record labels, across all genres.
Songlink - Share music with anyone.