DRMBuster - DRMBuster is a powerful all-in-one audio and video conversion software for any kind of purchased or legally obtained music and video.
MakeOwnRingtone.com - Make your own ringtone! Follow the steps:
Apprentice Alf's DeDRM Tools - Everything you ever wanted to know about DRM and ebooks, but were afraid to ask.
Ringer.org - Ringer.org is a free ringtone maker to make ringtones from any song or audio file.
AppleMacSoft DRM Converter for Mac - Legal Convert iTunes and Apple Music M4P to MP3 on Mac with DRM Converter 3.
Song Cutter and Ringtone Maker - Free Online Ringtone Maker