flacon VS picard

For splitting flac/cuesheets I use Flacon.

I use flacon. Nice tool.

Have you tried https://www.funkwhale.audio/?

It can be used effectively as a "private spotify". Labeling is a solved problem thanks to https://picard.musicbrainz.org/, and the fact that a lot of the music you buy these days comes pre-labeled already.

You then have a web-app (and/or a mobile app, if that's your thing) where you can stream music as you would with Spotify.

You can even build yourself a little music-sharing commune with friends, where you all upload the albums you buy and accumulate a nice collection of diverse tunes.

I use picard for my collection. My work flow is Picard > Lyrics Finder > Foobar for BPM, RealGain and DR > Custom python script to pull genre and mood from Last.FM and spotify> then Advanced Renamer to perform naming clean up of folder names. I lowercase and underscore spaces. Also does files if I happen to need Mp3Tag when Picard doesn't find anything. Once this is done I move files on to may NAS.

Musicbrainz Picard - A great application that I've used in the past to identify and organize my saved music collection. It's not focused on adding semantic tags though: it's used for adding metadata to .mp3 files.

I do the same but run it though Picard[0] before adding to Plex.

[0]https://picard.musicbrainz.org/

feed all of your music to something like 'musicbrainz picard' - it will sort out all the tags and provide the artwork too

Aside from properly ripping and tagging your own physical collection I'd generally refer you to r/piracy but I think they've gone a bit strange since the blackout. I'm fairly sure anything more specific in that direction would not be appropriate for this subreddit.

Downloading MusicBrainz will be a lifesaver for you.