Peopel listen to audiobooks via iTunes on Mac (Book app on macOS 10.15 )and PC and Books app on iOS devices(iOS 8.4 and later). Although Apple relesed Apple Music Android version for Android users to enjoy songs, there is still no app for audiobooks. Then how to play iTunes audiobooks on Android phones and tablets? You can't transfer them to Android devices and play them directly since they are DRM-protected. To enjoy them on Android, you need to remove DRM and convert the M4B/M4P audiobooks to mp3 first.

Part 1 Convert Audible AA/AAX Audiobooks to M4A or MP3:

Step 1: Install Audible Audiobook Converter
Download, install and run Audible Audiobook Converter and install it on your Mac or Windows.

Step 2: Add Audiobooks
Download Audible audiobooks from Audible website or Audible App on your computer. Drag&drop the audiobook you want to listen to on Garmin watch to the Converter interface. Add as many audiobooks as you want.

Step 3: customize the settings
Ondesoft Audible Converter allows you to convert aa/aax audiobooks to lossless M4A, MP3, M4B, AC3, AAC, FLAC, OGG, AIFF and WAV. Click Options icon to choose the output format. Customize samplerate and bitrate as you like.

Notice: Audiobooks have inherently low bitrate because you only need the human voice component. 64kbps should be enough for most audiobooks because it is the bitrate that can record voice with no loss of quality.

Besides converting aax to MP3, m4a, etc., Audible converter also allows you to split large audiobook files to multiple segments by duration or chapters during conversion.

Step 4: start to convert
Click the icon ”Convert” to start converting Audible AA/AAX Audiobooks to MP3. M4A, etc.