Well I give up. That program looked really cool. I liked that I could take cute pics of my kids, make a wallpaper in one click and txt mssg it to myself. But I can't figure out the gcd thing.
So...............
I used Audacity, and the LAME MP3 encoder for it. All also free. then because I was too lazy to go find the cable for my phone... I sent it to myself via this:
http://rumkin.com/tools/sprint/ Worked instantly.
Now I'm making other ringers and fading them in and out and all sorts of stuff. The one I just made sounds really good actually. Wasn't sure it was going to.