Fine tuning my iTunes library
I've been experimenting with various music "radio" services like pandora and slacker. With Slacker, I'm able to add a bunch of artists that I'd like to hear in my mix, and then fine tune the mix based on several parameters:
The two parameters I would be most interested in are Popularity and Favorites. While I know that I can rate individual songs in my library, that would take forever to do. Is there some outside source that will screen an itunes library and code this information accordingly? So then perhaps the stars correspond with the popularity indicators as shown above. And how might Favorites be coded? Any ideas?
Thanks!