Ondesoft AudioBook Converter is an AA converter that can batch convert purchased Audio books or AA flies from iTunes or Audible on MAC OS X to MP3 or AAC format. Then DRM protections on audio book will be removed. The conversion with CD output quality is at up to 16X speeds! key features: 1. Convert purchased Audio Book playable on iTunes Any purchased audio books from itunes or audible, if it could be played on iTunes, can be unlocked and converted to MP3 or AAC, AC3, AIFF, AU, FLAC, M4A, M4R and MKA. 2. Convert audible aa to MP3 to Play anywhere Remove DRM of Audio Books or AA files from iTunes audiobook library to MP3 or AAC format and enjoy it on iPhone 4S, iPod touch, iPad, Sony PSP, smart phone, MP3 player, laptop, portable PC, etc. 3. Remove DRM protections As an .aa converter and audio book DRM remover, Ondesoft audioBook converter can remove copy-protection (DRM) from Audio Books and convert into unprotected MP3 or AAC format. 4. 16X conversion speed Encode and convert audible aa files at speeds of up to 16X. 5. Preserve ID Tags Ondesoft purchased AudioBook Converter will keep ID Tags such as title, artist, album, cover and genre to the new converted MP3 or AAC files files. Chapter info can also be kept. 6. Output MP3 or AAC files with CD Quality Preset output options like codeck, bitrate, sample rate and channels to get customized MP3 or AAC files with CD Quality. 7. Convert DRM audiobooks in batch Batch conversion allows users to select multiple audio book files to convert with just a single button. 8. Silent Recording Mac AudioBook Converter works in the background when remove DRM from purchased audio books. 9. Quick access to iTunes folder Loading the user's iTunes' folders automatically makes for a quick and seamless user experience. 10. Unlimited converting times Convert AA files as many times as you like without limitation of one-time burning to Disc on each authorized Mac. Requirements Mac OS X 10.6.0 - 10.8.2