Boing Boing: Cellular automata ringtones
Cellular automata ringtones Math genius Stephen Wolfram has a site called WolframTones that generates music from one dimensional cellular automaton patterns

Yahoo! Mobile & Yahoo! Music Ringtones - Shop and Download Ringtones
Yahoo! Mobile and Yahoo! Music is the best place to shop and download ringtones on Cingular mMode and Cingular MEdia Net.

YourMobile.com
USA | UK | Australia.

Ringtones-Direct - Monophonic, Polyphonic, and True Tones for
Ringtones, logos, picture messages and voicemail for various brands of mobile phone.

Polyphonic Ringtones Nokia Ringtones Phone games Poly Tones Real
Polyphonic Ringtones Nokia Ringtones Real Tones Nokia Java Games Poly Ringtones Polyphonic tones Nokia Logos Colour Backgrounds Picture Messages.