Music Genome Project

Did you ever try the "Alexandria" site? You could input all the books you liked, and it would come up with suggestions for further reading... Amazon does that too (usually recommending all the books by one author that I've already read!)

Well, this site seems to be a rather more sophisticated and interesting variation. You tell them an artist or song that you like, and they create an "internet radio station" specially for you, based on your input. So far, it has worked very well for me, and looks set fair to make some interesting suggestions for new listening.