Xingtone is a nice program that allows you to make ringtones out of mp3s and transfer them to your phone. I already checked and your Sanyo phone is compatible. You can download a trial version to make sure it works, but it only has 5 sounds with it. If you want to use your own mp3s, it costs $15. That's not too much considering it's unlimited use and Cingular charges $2.50 for each "trutone" or "real voice" ringtone.