You have to Join LastFm (http://www.last.fm/?setlang=en)and sign on LastFm as an artist or label and upload your music (earn royalties every time someone listens).
just do it and next, send me a message to play on my radio station, you will be played to the right ears...
1. You have to sign in last.fm as musician or record company
2. upload some tracks or albuns.
3. mail me what albuns or tracks you would like on may radio station.