I've been maintaining a self-hosted music library for so long (30+ years now), there used to not be any tools for editing metadata. I used to have to go into file properties and manually edit the data for each individual MP3 file. Nowadays, I use Mp3tag to manually edit entire albums at a time. I have ADHD though (the hyperfixation kind), so I've literally dedicated thousands of hours to manually fixing metadata.
I guess I never bothered to look for more advanced tools to auto-update metadata. I had to go in and manually fix stuff that updated automatically from the Internet in the past, so I guess I stopped trusting online databases. But they've really advanced since the last time I went searching for tools, and their databases are a lot more complete in this day and age. I'm gonna play around with some of these programs and see how well they work.
I host my music library through Plex, then use Symfonium on my phone if I want to stream my Plex music remotely, just because I like their interface a little better than Plex's.
Easytag works pretty well for me on Linux, when I'm not just using Picard. I use EasyTag mostly for fixing and normalizing the tags on audiobooks these days.
When you say Plex interface remotely, are you referring to the Plex app or PlexAmp app? I feel like PlexAmp fixed all of my complaints about listening to music through Plex (the same app I use for videos).
I was referring to PlexAmp. It's decent, works well, but I just liked the interface for Symfonium better. It seemed more functional than PlexAmp when I switched over to it.
I actually haven't used PlexAmp in a few years, so maybe it's gotten better lately. I guess I'll have to compare apps.