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Convert au to m4b

  1. Download and install the latest version of Filestar.

  2. Right click on one or more Au file(s) on your desktop and select Convert with Filestar.

  3. Type convert to m4b in the search box.

  4. Press Convert.

What is the difference between .au and .m4b?

Name
Audacity Audio File
MPEG-4 Audio Book File
Extension
.au
.m4b
Format
Binary
Binary
Category
Audio
Audio
Developer
Audacity
Apple
Description
Audio file created by Audacity, a free, cross platform audio editor; uses a proprietary format that can only be opened by Audacity; saved as one of multiple audio data files for an Audacity project (.AUD).
It is an audiobook file compressed using .AAC algorithm based on MPEG-4 container format. It is similar to .M4A file but its denoted as an audiobook and supporting audio players can bookmark it.
MIME Type
audio/basic
audio/x-m4a
Sample
sample.au
sample.m4b
Wikipedia
.au on Wikipedia
.m4b on Wikipedia

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