You do not have to run a local of Musicbrainz (I do - because I can, it removes API limits but its expensive in storage and data) just point to the public instance. Also you could do Headphones, but I moved away from that years ago and have had a much happier experience with Lidarr.
So Lidarr/NZBGet (or whatever you use) are pretty straight forward.
It gets complex with beets. Not that it is inherently complex, it just has an absolute shit ton of options. You want to start with a yaml config, and just get the feel of how it operates. There are lots of “howto’s” online, but unfortunately “beets” is a way to simple search. So you need to beef it with some specifics related to ahem music.
The manual and github do have it well documented. I would suggest starting with a subset of your collection, and just tinkering, (move files from /home/a to /home/b, convert to mp3 and fix ID3). It comes together pretty quickly. But the configurables of beets is crazy (in a good way).
Other things like triggering scans from LMS etc, they are documented on their respective sites.
I’ll fess up - its not immediately for the faint hearted, but its probably not that hard for most people - who actually read documents and learn.
It works well, and you can trigger LMS (logitech media server) and Airsonic to update automatically. So if something goes in all automated, then your players will also ‘just’ have it available.
I use Lidarr for most music grabs. spotdl when Lidarr fails to find (which is uncommon since I use usenet). Then I use beets to manage music files <a href="">https://github.com/beetbox/beets</a> .
I have beets setup to run as a cron every 10 min, and it looks in the location that nzbget downloads to, and it automatically converts, fixes ID3s via musicbrainz db, and moves the completed files to my music section. Anything that beets doesnt see as a 95% match, I then manually run the script and choose the correct musicbrainz ID for the band/album.
Is google that stupid that this will not bring on an onslaught of abuse to circumvent their false god status of the internet? I have already been “part 3’d” and completely bypassed it.
They get jackshit from me now at all. At least before they may have made some revenue from me for viewing the videos, now I am a ghost. No money for anyone. (and in case you are gonna say - I dont care content makers are losing, they are all dumbarses, and if they are supporting yt still and not posting elsewhere, then they are just stupid cunts. The only reason google is doing this is to make more money off of the people who make content, but not upset their already unstable revenue income. If the content providers get antsy and leave, YT loses.