iTunes 7.4.2 just came out, and its reported that it breaks some custom ringtone hacks. Apple's been open-minded about hardware changes, but anything infringing upon iTunes sales has been patched pretty aggressively in the past. Ringtones, too, it seems. The file renaming hack to cease working. Sendsong and manual copying of ringtones to the iPhone still seem to work as do a few of our older methods. [Macrumors] Updated: Custom Ringtone hacked once more.
DISCUSSION
Macrumors suggests this "fix":
"You have to use that ID3 mod (Atomic Parsley), but use .m4r extensions. Once you change the STIK field to 14 using atomic parsley and change the extension from .m4a to .m4r, you can drag ringtones into your library again by hand."
In the immortal words of Lewis Black: "Bbbbbbbbb...what the phuck?"