Unfortunately, AAX Audio Converter only accepts AAX at the moment (that will change). All further processing is left to AAX Audio Converter, like splitting it up into chapters or even smaller chunks or transcoding into MP3. The result is M4B (the file naming convention for an MP4 audio book).īook Lib Connect only does the minimum to create plain audio. Then, using another package of Open Source software, decrypts the AAC audio stream with these keys. It downloads your books as AAXC files and also the individual keys for them. It's not the first implementation of an Audible API client and probably won't be the last. Here Book Lib Connect kicks in, the new companion to AAX Audio Converter. And that's done by connecting to the Audible server directly, just as Audible's own mobile apps do.
#CONVERTING AUDIBLE FILES TO MP3 FREE HOW TO#
The Open Source community has found out how to retrieve these keys and how to apply them. For those you will need an individual key per file and also per device. The new and more advanced form comes as AAXC files which you'll find on your mobile devices, Android or iPhone. A single activation code was good for all your books. Now, the older form is what we know as AAX files. That's good, because most CPUs these days allow hardware accelerated decryption of AES. Internally, it's always an AAC audio stream inside an MP4 container. Jump to the bottom of this comment for the summary.Īudible is using two different forms of encryption.
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