All new Sprint phones will play standard MIDI files. Save them on your computer and upload them to the web using a site like www.pcspix.com. Once the files are uploaded to your PCSPix account, you can access them from the web using your phone.
I'm such a dork about my cell phone. I have specific ringers for each person. If someone is showing up that's not in my book, it plays No Surprises by Radiohead. Other ringers I use are Rapture, Atomic, Our House, Da Funk, Jenny 867-5309, Just Like Heaven, and Talk Show Host. I'm probably the one annyoing Nag in Pizza Hut or during an exam.
Well if you made into a big collage, it might look a little bit like this (jwz.org). Be forewarned, Potentially Not Safe For Work. I think it's pretty cool, but you may randomly see some naked women, or some goatse, so be careful. -Jag