M4B Audiobook - What is M4B and how to open it

What is M4B?

A file with the M4B file extension is a MPEG-4 Audio Book file. It is used by audiobooks downloaded from the Apple iTunes store. These audiobooks are copy-protected using Apple's FairPlay DRM, which means they can only be played on authorized computers or iOS devices. Audiobooks that you buy from the iBooks Store or iTunes Store are automatically available in the iBooks app on iPhone, iPad, and iPod touch using iOS 9 and later, and in iTunes on a Mac with iTunes 12.4 or later.

M4B audiobook

How to open an M4B audiobook on a Computer

M4B audiobooks you purchased from iTunes Store will play only in iTunes on authorized computers . To authorize the computer, run iTunes and click Account - Authorizations - Authorize This Computer. Enter your Apple ID and password and then click Authorize. Please note you can authorize up to 5 computers for each Apple ID, which means you can only enjoy your audiobook on 5 computers. In iTunes, choose Audiobooks from the menu in the upper-left corner. Double-click an audiobook to start listening. When you stop listening, iTunes remembers where you stopped and starts there the next time that you return to your audiobook.

How to open an M4B audiobook on an iPhone, iPad or iPod Touch

Apple moved audiobook playback and management from the Music app to the iBooks app since iOS 8.4. Audiobooks you sync from iTunes to your iOS device get shunted into the iBooks app, where you can play them back as you used to in the Music app.

How to open an M4B audiobook on non-Apple devices

M4B audiobooks are DRM protected and can't play on non-Apple devices directly. You need to remove audiobook DRM and convert M4B to MP3, M4A, etc. This article will introduce a M4B audiobook converter and show you how to remove DRM from iTunes M4B audiobooks.

The M4B audiobook converter is called Ondesoft Audible Converter . Once launched, it will load all your audiobooks from iTunes Library and show them on the interface. Here is a detailed tutorial.

1. Launch Ondesoft Audible Converter

Download, install and run Ondesoft Audible Converter for Mac or Ondesoft Audible Converter for Windows. It will automatically load all audiobooks in your iTunes library .

2. Select M4B audiobooks you want to convert

Tick the checkbox before the audiobook you want to convert. Choose output format from: MP3, M4A, AC3, AAC, AIFF, AU, FLAC, M4R and MKA. Set output audiobook quality. Original metadata information will be preserved. You can also customize them.

choose m4b audiobook

3. Click Start Convert button to convert M4B audiobooks

Click Convert button to start removing DRM from M4B audiobooks and convert M4B to MP3, M4A, etc. After conversion, you will get the DRM-free audiobook to play them anywhere you want.

convert M4B audiobook

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