Rocket Broadcaster - Broadcast live to your internet radio station (Icecast, SHOUTcast, and more).
Spotify - Map shows when two people play same song at same time
SHOUTcast Radio - SHOUTcast Radio is the home of free Internet Radio.
SoundCloud - Enjoy music & follow favourite artists
Streampusher - Start your own internet radio station
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