I use them for downloading my Audible books. Then I decrypt them with ffmpeg: ffmpeg -activation_bytes XXXX -i audiobook.aax audiobook.mp3 It also supports de

I use them for downloading my Audible books. Then I decrypt them with ffmpeg: ffmpeg -activation_bytes XXXX -i audiobook.aax audiobook.mp3 It also supports decrypting but you have to pay for that.