Listen Rhapsody (Score 1)

Not quite what you're asking for, but I have found quite a lot of great new music as a subsciber to Rhapsody. It provides recommendations based on what you're currently listening too, and has some good "radio stations" theough which I've also picked up some tips for digging deeper. Of course, you have to pay for it, but it's pretty cheap compared to the cost of buying a CD that you end up listening to a couple of times and getting bored with.