inAudible VS AudiobookHub

You can use software like Libation, AAX Audio Converter or inAudible to decrypt Audible books.

Libation author here. Libation reads directly from your audible account and downloads/decrypts in one step. No aax, just straight to m4b. There's also a setting to convert to mp3 instead. It cannot take existing aax files and do this. inAudible can target aax files directly but it's getting a bit long in the tooth so it's not as reliable as it used to be. I've never tried aaxtomp3.

Sorry no. You can try inAudible for that but it's rather out of date. Libation gets your encrypted files from audible and decrypts them on the fly. It's against the terms of service/conditions of use regardless, one just happens off line.

As u/JethroMcClintock said, there's inAudible (windows). It hasn't been updated in a long time so it might not work for some users. The people it does work for all seem to love it

If you have the AAX files, you can convert these to MP3s using inaudible. You do need to install the Lame codec for this to work, then it's fairly seamless. The way I look at it, you paid to buy these books, so converting them to MP3 prevents you from losing access to them in situations like this. (There is no difference between these mp3s and any other mp3 file you upload to your audio player).

Installers are here but it's unfortunately quite out of date. It was last updated in 2017 and Audible has since changed most of their catalog to a format which inAudible can no longer decrypt.

TIPP: A great tool to convert audible books into mp3: https://github.com/rmcrackan/inAudible

However, it also says 'Don't use Windows? Or is Libation just not right for you? Similar apps are on AudiobookHub, nearly all of which are also free'

There are unofficial solutions like my app Libation which does support Plus and removes DRM, and other similar software.

This page https://github.com/rmcrackan/AudiobookHub may have more useful info

Unofficially you can download your books locally using my program Libation or similar then listen with the app of your choice. On my laptop I like VLC because it has speed control.

If Libation's not your jam though, please use something. There are other options, most of which are also free and open source.

I recommend using my software Libation (free, open source, windows) for backing up audible books. If that's not the right choice for you though please use something. There are many alternatives and most are also free and open source.

More related resources: Audiobook Hub

May I include your new software here? And if so, under which heading?

Also checkout AudiobookHub for a variety of audible-focused app, tools, and software.

If you don't mind some extra steps, you can download them with my Libation(windows, free, open source) or a similar program then listen to the files in any program you wish.