Recommender algorithm extension

I’m trying to create a startup based on some music recommendation research I did in college, and I discovered mopidy today. Mopidy looks perfect–I’m envisioning creating something kind of like the scrobbler extension, only it would send listener data to a server I set up, and then it would receive back a list of tracks to play next. These would be added to the queue/current playlist/whatever.

Something like this was discussed on hacker news a while back (adamcik: “This idea keeps coming up”). Is anyone aware of any work that’s actually been done/attempted on this kind of thing? I’d like to learn what I can from existing work if there is any.