You can search Google base for ring tones now. Is this going to be the backend for mobile content? They have options for audio, games, images, ring tones, and videos.

http://farm2.static.flickr.com/1298/838960435_45cdcecc9f_o.png

Here is what a search for U2 ring tone comes up with:
http://farm2.static.flickr.com/1334/838960383_f5dd20dff7_o.png

Am I alone to get a XML error there?
https://www.google.com/accounts/ServiceLogin?service=mobile

TOMHTML, I've always had that XML parsing error on that page. I think the "nowrap" attribute might be invalid syntax or something. Also, if you feed the content into the W3C validator, it doesn't even come close to validating.