So I'm listening to this Japanese Peercast right... and I have no idea if a person is behind it or not. And do I really care?
If the music selection is "good"...
I should be careful with this... my wife was a college radio DJ, and she reads the blog. :-)
Maybe the system can be your own personal DJ through the recommendation system.
I remember Brian Mansell (he used to livejournal, but I've lost track of him, does he have another blog up?) working on creating a system that would allow people to post requests to an automated playlist system. I bet he would have some interesting ideas about this.