Are iTunes Plus Non-DRM Songs Freely Ringtone-Able Using the Unofficial File Extension Renaming Trick?
Yes. Just use the trick where you make a copy of an AAC audio file and change its extension to “.m4r”, open it in iTunes, then change the file extension back to “.m4a” and sync your iPhone. Or, far easier, just use Rogue Amoeba’s new freeware MakeiPhoneRingtone utility, which automates the above steps. Works equally well with AAC files ripped from CDs and “iTunes Plus” files purchased from iTunes.