Please refer to the following tutorials about how to remove DRM protection from Audiobook files and how to keep chapters in output AAC files. Also, you can refer to Audiobook Online Help for more detailed tutorials.
How to remove DRM protection from Audiobook files?
Step 1. Download and Install NoteBurner Audiobook Converter
For Mac OS X 10.6, 10.7 users, please download and install Version 1.6.0.
For Mac OS X 10.8, 10.9, 10.10, 10.11 and 10.12 users, please download and install the latest version here.
Step 2. Run NoteBurner Audiobook Converter on Mac
Launch NoteBurner Audiobook Converter on Mac, all of audiobook files would be listed automatically.
Step 3. Add Audiobook with NoteBurner Audiobook Converter
Click "Add Audiobook" button to select the audiobook files you want to convert.
Step 3. Click "Convert" Button to Start Audio Book Conversion.
How to keep Chapters in Output AAC Files?
NoteBurner Audiobook Converter for Mac can keep chapters in output AAC files, but you need to make adjust settings in the program. Please follow the following steps:
Step 1. Open Program's Preference
Run NoteBurner Audiobook Converter for Mac, and then click menu "NoteBurner Audiobook Converter > Preference".
( Please make sure you have installed the latest version of NoteBurner through our website. )
Step 2. Check the Option "Keep chapters"
In the Preference dialog, please check the option "Keep chapters (Only work with AAC output format)".
Note: only AAC (.m4a) format can preserve chapters information.