What's a good site to download ring tones for the iPhone? Also, what is a good program for making your own other that iTunes?
nope, you need to convert them to .m4r and import them into your itunes library.
Here are some step by step instructions.
Tekzilla How To: Make Your Own iPhone Ringtones in iTunes | The iPhone Blog
i used the "rename" function in windows to do it Make sure to unhide "known extensions" first then just click the thing and rename it.
folder options, "hide extensions for known file types"