06-25-2018 12:04 AM
M4B is a file extension for an MPEG-4 part 14 audio layer audio book container file format used by iTunes. An M4B file is very similar to an M4A file but specified for audio books. Programs that can open M4B files include iTunes, Windows Media Player and Roxio Creator. So if you want to play it in Sansa Fuze, you'd better remove the DRM from the .M4b with some audiobook converter and convert it to common MP3 format.
08-20-2018 03:35 AM
M4B audiobooks from differnet source have differnert solution when converting them to MP3. Taken iTunes M4B audiobooks as example, iTunes audiobooks are also encoded in DRM technology, which prevents you playing audiobooks from iTunes on authorized devices and players. As for converting iTunes M4B to MP3, you need to remove DRM protection from iTunes audiobooks. So you need to equip with a special M4B converter, like Audio Converter for Windows that is also a DRM removal software.
Good news is that this Audio Converter for Mac is also available for DRM-free M4B audiobooks. Put it another, you are able to convert DRM and DRM-free M4B audiobooks to MP3 with using the one tool. As for the tutorial to convert M4B to MP3, please refer to this source page: Convert M4B to MP3
08-20-2018 03:46 AM
Audiobooks purchased from Audible encoded with M4P files are encrypted FairPlay DRM technology. If you would like to convert audiobook DRM M4P to MP3, you need to remove DRM protection from these protected files.
Here, I high recommend AudFree DRM Audiobook Converter for Mac to remove DRM protection and convert DRM M4P files to MP3 directly with this one-stop tool. Besides, you can use this software to convert audiobooks DRM M4P to MP3, AAC, FLAC, MAV, etc without touching original files.