Audio Book
convert any epub, pdf, txt, rft, html ebooks and ibooks to audiobooks.
Total Audio MP3 Converter
Converts 150 audio and video formats to 29 file formats and keeps ID3 tag.
iTunes DRM Audio Converter for Windows
convert drm-ed apple music files, audiobooks, m4p to drm-free mp3,aac
Mac Audio Book Converter
legal convert itunes m4b to mp3 on mac os x with audio book converter.