You can easily make your own ringtone using any CD or MP3.  It's such a no brainer, even I figured it out.

Only problem is, after creating a great ringtone to Great Big Sea'sDonkey Riding, I realized my old dinosaur of a cell phone won't accept emails.

*aaaaarrrrggggggh*

BTW, it's not what you think. "Donkey riding" refers to riding the boomlike engine that loaded cargo timbers onto old sailing vessels. I know what you were thinking. Perv.