londrum - 11:09 am on Aug 2, 2010 (gmt 0)
if it was me i would look at other internet radio stations and look at the URLs of their ads, to see where they get their's from. if you apply to those you might have more luck.
you should look at selling MP3s as well. you have to link them to the actual songs though, so people can buy the track that they're listening to.