That’s right, I have found a great little site that converts your existing mp3 files to m4r files to use as iphone ringtones. Longer songs will need to be cutdown using the interface on the site, but for those of us who already have a bag full of mp3 ringtones from older phones, this is a handy little tool to get them converted.

mp3 to m4r

I know I have quite a few to convert and put up for sharing!