I used to have a V3 Razor, I used this program called Motorola Phone Tools. It allows you to take a song from iTunes or a file from your computer and crop out what you like from it. Then you copy it to your phone and use it as a ringtone. Point is, check a few programs (to see if it recognizes your phone) or check AT&T's site for the FAQ's and help section before you have to actually go to the store.