In September, just before the 1.1.1 firmware release, getting free ringtones for your iPhone was as easy as crushing a small grape: the simply-titled MakeiPhoneRingtone (it did exactly what it said on the tin) could take any audio file on your computer and convert it into a custom tune.  Then came the dreaded firmware update and a change to iTunes, after which the loophole which the software exploited was closed up.

read it here myitablet