Finally, I can listen to
Classical Gas all the time!
It appears to be a lot of indie publishers, with some major artists thrown in. I noticed that some stuff is explicitly *not* available, that is, a lot of that artist's stuff is, but a hit song from them won't be. The case in point is Dirty Vegas, which has most of their music available to become ringtones, except their one big club hit "I Should Know" is skipped over.