Thank you Chaz, that's exactly what I was looking for.
After doing this it still wasn't loud enough for me with some MP3 ringers due to low gain on the song itself. I used mp3DirectCut (which is freeware) to clip out the portion of the song to make a ringtone and then increased the gain to make it louder. You can do the same with any audio editing software I suppose, I like this one because it edits with no conversion to/from MP3.