What I really want is a music recommendation system that scans my music library and using a combination of likes, play counts, genres and what I've played recently make a list of recommendations. Even more awesome - let me explore new genres. Say I'd like to explore more Jazz, let me explore Jazz and using the aforementioned information make a recommendation for what I'd like. The awesomest would be to let me stream the recommendation(s) a few times - I'd even pay for that - so I can decide if I like it and want to add it to my library. Ideally it would use my likes/dislikes on its recommendations as input to future recommendations.