Macsome Audiobook Converter for Win converts any audio books that could be played on iTunes. The conversion is 5X speed fast, and could be the CD Quality. Moreover, it's also an .aa converter, audio book to MP3 converter. This Audio book Converter converts any Audio Book from iTunes and Audible AA to MP3 or AAC files on your PC. ID tags could be preserved simultaneously. It also supports batch conversion. No matter what format the audio book is, if it could be played on iTunes, the program will convert it to MP3 or AAC format for you. You don't need to worry about this.