If you are interested in having all your music be detected in Plex, you might consider the SongKong app.
SongKong is an automatic music tagger matches your files against MusicBrainz and Discog. It then rewrites the tags, artwork and file names to match.
Plex is only as good as the metadata you feed it, and SongKong’s strength is turning a folder of Track01.flac into a clean Artist/Album/01 - Title tree with album artist, year, track/disc numbers and cover art filled in.
App Features
- Handles libraries of any size in one pass, unlike free apps like Picard.
- It has uses three databases instead of one, so obscure and self-released albums match more often.
- Good classical handling (composer, work, movement) and it supports scripting/auto-edit rules for consistent naming across a collection
- Runs on macOS, Windows, Linux, Docker and NAS (Synology/QNAP/unRAID) with a web UI, so it can live on the same server as Plex.
Pricing
The free version of SongKong shows a preview its operation, but to save any changes you need to purchase a license.
Standard tier costs £35 (auto-match, rename, duplicates), Premium £50.
