I am also using Navidrome and Symfonium. It's about as good as local library playback can get! Thanks for a new one to try Feishin, never heard of it before. I have tried setting up Lidarr, but I never got it to grab stuff and rename it to what i like, so I stopped. I'm sure I probably could, but I didn't want to spend the time trying.

My current setup is grab from Orpheus or redacted, run it through program generically called tagscanner (been using it for years and love it) then drop everything into musicbrainz Picard with custom setup to only grab genres for everything and will attach up to 5 different ones. From there, i move everything to the music library by artist and subfolder for albums. Once there, i load Musicbee, which is my pc app of choice because of the customization and audio playback quality. Once there, if any album art is missing, it's easily discoverable and then loaded into navidrome.

The hardest part was discovering that I should organize properly after a decade of collecting music, and it took months to reorganize and tag everything properly. I had to do that once more with genres. Once I figured out how to automate that and would take chunks at a time and have it do it over days, which also took months. It's been about 10 years of me doing it this way and has worked great if not a bit tedious.