Yeah, from what I’ve read in other threads, Plex is pretty much limited to reading just the tags below. They have said they’re working on improvements in this area. If you want to add your vote, I recommend voting for this feature request.
As for synopses, reviews, etc., if Plex finds these things on the online services (Last.FM, etc.), it will generally download them, unless you’ve turned off those options. No way currently to import those things from local files.
Artist
Album Artist
Album
Title
Year
Genre
Track #
Cover Art
