Convert AAC, M4A and other formats to MP3
Convert iTunes audiobooks or Audible audiobooks to MP3, AAC, M4A, AC3, and so on
Convert M4A/AAC into MP3/WAV/WMA format.
Convert MP4, M4A, M4B, AAC to MP3 or WAV. Split M4B audiobooks based on chapters
Convert AAC to MP3, Convert M4A to MP3, etc