Spotify - Map shows when two people play same song at same time
Openwhyd - Collect and Share the tracks you love.
SoundCloud - Enjoy music & follow favourite artists
Zoff - Collaborate on a live music and video playlist with your friends.
Audiomack - The free SoundCloud alternative
CLiGGO MUSIC - CLiGGO MUSIC provides free music enjoyment on your pc, smart phone or tablet.