Booksonic-Air VS Audiobooks.bundle

You should check out booksonic, works pretty well, fully open-source

Booksonic-air may be a good fit, it's directory based, and the search is pretty good. https://github.com/popeen/Booksonic-Air

You can check out booksonic https://booksonic.org/ pretty simple docker setup, its free and works fine with a basic a web ui.

mkdir /home/nginx/Tools/booksonic-air cd /home/nginx/Tools/booksonic-air wget https://github.com/popeen/Booksonic-Air/releases/download/v2112.2.0/booksonic.war chown -R nginx:nginx /home/nginx/Tools/booksonic-air/ /usr/lib/jvm/jdk-18/bin/java -jar /home/nginx/Tools/booksonic-air/booksonic.war -Dserver.port=4141

Getting back to the topic at hand. I looked in the Github project https://github.com/popeen/Booksonic-Air but I couldn't find any documentation for the REST API. Is there none or did I miss something?

I don't know of any app that will synch between different devices but I went ahead and set up my own Booksonic server. This allows me to listen through any browser or through the Android app.

Booksonic Air 2201.1.0, https://github.com/popeen/Booksonic-Air/releases/tag/v2201.1.0

Also I noticed Audiobook.bundle is no longer being actively worked on and has been moved to a different project, Audnexus. If you want to try it, I would use Audnexus because it has a release in March.

I just set up Plex with the Audnexus agent (https://github.com/seanap/Audiobooks.bundle), using the Prologue app (https://prologue.audio/) to listen on my phone. It was a little bit of a fiddle to set up, but it's worked wonderfully.

I used this one: https://github.com/seanap/Audiobooks.bundle

You certainly have to massage it to make it work but with a plug-in or two (Seanad guide)and apps like prologue you certainly can get a good and complete experience.

Mp3Tag can be used to bulk edit local metadata if that's what's causing issues. This guide that targeted Audnexus's predecessor is also still relevant if you want to automate some of the process.

I currently have my large collection of audiobooks indexed in Plex as a music library using the Audiobooks.bundle scanner/agent - I setup AudiobookShelf on a VM to play around with it and have so far been very pleasantly surprised by the feature set.

I can't help with the Jellyfin side of things, but I have had great success with this methodology via Plex (even in the free version) using the iOS app Prologue

There is no built-in Plex audiobook agent. Do you have (old) Audiobooks.bundle agent installed?

The latest plex update broke metadata agents. For now you can roll back to 1.24.2. Plex will be release a fix in an upcoming beta release https://github.com/seanap/Audiobooks.bundle/issues/36

Sounds more like an issue with the agent. The fork here allows you to disable downloading artwork https://github.com/seanap/Audiobooks.bundle