So I got an iPhone today and one of the first things I went looking for was a way to use songs from my MP3 collection as a ringtone.  I knew there was a way to do it on a PC, so I had no doubts there would be a way to do it on the Mac.  iToner is the answer.  iToner requires no hacking, no understanding of file structures, and it really doesnt require much of a brain cell to work.  Simply download iToner, connect your iPhone, drag the audio files you want to add as a ringtone onto the iToner application and push sync.  Your done.

From the makers of iToner:

“iToner enables you to quickly transfer custom ringtones for your iPhone – without modifying, hacking or having to reset your iPhone. Simply drag and drop your MP3 or AAC audio files on iToner’s window, click the Sync button, and you’re done. Even better, your ringtones will continue to work with future iPhone OS updates!”

“Your iPhone allows you to assign different ringtones for your different contacts. With iToner, now you can have a Barry White ringtone for when your girlfriend calls, Frank Zappa for when your college buddies ring you up, or the theme from Jaws for when your boss is calling.”

iToner has a 30 day trial and is 15 dollars once the trial runs out, and the trial does not have any limitations.

Download iToner and use mp3s as ring tones on your iPhone.