I started using Navidrom as suggested by someone in the group. I do not have audio books but it has a spot for them. If you want to get all fancy like you can use the MusicBrainz Picard for tagging stuff differently (or something like that I am really feeling the glue and sealant they used to put down the laminate in my place right now) but AudioMuse-AI does something to (again really feeling it).

AudioMuse-AI is amazing for large music libraries