Switch - It's easy to convert to Mp3, wav, wma, flac, ogg and more with this #1 rated audio file converter. Convert a single audio file, a playlist or a large batch of files.
DRMBuster - DRMBuster is a powerful all-in-one audio and video conversion software for any kind of purchased or legally obtained music and video.
TuneMobie Spotify Music Converter - TuneMobie Spotify Music Converter for Mac is best Spotify music downloader that any Mac users can use to download and convert Spotify music to MP3, M4A, WAV or FLAC for offline listening with free or premium account.
Apprentice Alf's DeDRM Tools - Everything you ever wanted to know about DRM and ebooks, but were afraid to ask.
AppleMacSoft DRM Converter for Mac - Legal Convert iTunes and Apple Music M4P to MP3 on Mac with DRM Converter 3.
OpenAudible - OpenAudible Project Page