Ringtones rip-off

There is supposedly a multi-billion industry for Mobile phone ringtones and other vanity "improvements" to cell phones. It looks like information is not flowing freely. If you own a certain generation of phones (e.g. SE T610), you already have all you need:
- Bluetooth for file transfer
- MIDI files as tones
That's right. Download pretty much any .mid file that's out there (and they've been out there for 10 years already), and you get a new ringtone. I bet you *will* find one that you like...