Check out http://www.3gforfree.com/web
3gforfree allows users to create their own ringtones and screensavers from content they already own.
I switched from postnuke to drupal for this new version for numerous reasons that you guys are already familiar with.
The theming was done by the great guys over at antinomia solutions: http://www.antinomia.com/
I handled all the functionality and programming of additional modules.
Any comments good or bad are welcome.