Inaudible.nfo
I could not find a detailed description of Inaudible, so here goes my best shot at it.
Inaudible gets around the Audible DRM. Not the most intuitive software, but it does do that quite nicely.
It will give you chapterized mp3 files or a m4b file. The hardest part of doing this that I found is where the hell does Audible leave the .aax file. That's what you need to break into a unprotected audio file.
It will also take a m4b file (for those of you that hate m4b files and break it into chapterized mp3 files. This takes a bit of poking around with the settings in Inaudible. There are no help files. I did find the following tutorial. I think it is more confusing than poking around, but...
Tutorial for AAX conversion
Prerequisites
1. Install Audible Manager after you have finished the install open the program and make sure you have authorized Audible Manager with your account information i.e. user name and password.
2. Install inAudible.
Ripping
1. Select the source AAX file or files that you want to convert. Note, that if you select more than one file, inAudible will process them consecutively in batch mode.
3. Select the target location and file name of the output file. By default, inAudible will create the files and folders in the same directory as the source file.
5. Click The Edit Meta Data Button to review and make any changes to the Meta Data, if multiple files are Selected you can cycle through each book by using the arrows at the bottom of the meta Data Editor's Window.
Encoding options
1. Select the output format and associated quality levels. Currently, MP3, M4B, FLAC Opus and Ogg are supported.
If your main requirement is the best possible quality the best option is AAC/M4B with True Decrypt.
2. Note that AAX files are encoded at 22khz, 64kbits.
4. Leave Turbo Mode on.
Preprocessing options
1. Format specific processing:
1. If AAC / M4B output mode and True Decrypt are selected, the AAX file is decrypted directly with no re-encoding. VERY fast and totally lossless.
2. General:
1. Splitting files, you have a couple of options here, 1. Don't split just out put a single file in whatever format you selected for AAC/M4B you will get a single file with all the Chapter marks in the file.
for MP3 you will get a Single file and also a .CUE file with the Audible chapter marks in it so you can adjust them by hand in tools like MP3DirectCut, Goldwave or MP3splt.
3. Split by silence detection for this option click the Scissors icon at the top of the window this will open another window which gives you access to the Advanced Cutter and Chapterizer.
Some history: the code that openaudible uses behind the scenes to convert the encrypted aax files is the open source "ffmpeg" library. The audible-specific portions of ffmpeg's secret sauce was contributed by inAudible's author who open-sourced his key findings into how to decrypt audible files.
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