Cingular is all excited about offering so called "Super Tones" which are nothing more than pre-recorded bits of audio. Not polyphonic, real bits of music/voice. Websites have been selling these tones for a while, so it's not clear what the big deal is. Most likely it's just Cingular realizing people like to have non-cheesy sounding clips.
Supported phones on the Cingular network are: Nokia 3300, Nokia 3600 and Nokia 3650.