First custom ringtone on the iPhone

Looks like someone figured out how to get a custom ringtone on the iPhone, without Apple's help.  The YouTube poster doesn't list any specifics on how he got the old-school office phone ringtone on the phone, but we're guessing it has something to do with everyone figuring out the filesystem hacks.  We've embedded the video after the break, and keep in mind this could just be a hoax.  We'll see when more people start figuring out the hack.

[Via HF]