If you selfhost audiobooks, check out ReadMeABook

Just a PSA. I didn't see any posts on here about it, but have really been enjoying it and the wife likes it a lot. It solved a lot of manual effort on my part for getting audiobooks into Audiobookshelf w/o much manual intervention. The request system is similar to *seerr and its pretty simple to setup. Bonus: it supports OIDC out of the box, which I appreciate so I dont have one more account to manage.