Documentation on how Plex handles metadata in MP3 and FLAC files

Beckfield’s request contains a good start. Can we have a response from Plex?

Tags that Plex currently supports are marked with :small_blue_diamond:
Partially-supported tags marked with :small_orange_diamond:
Items that need to be added marked with :small_red_triangle:

:large_blue_diamond: TALB Album/Movie/Show title
:small_red_triangle: TCOM Composer [multiple names separated by “/”] [Absolutely indispensable for classical music]
:small_orange_diamond: TCON Content type [genre] [Needs to be on a per-TRACK basis] - [multiple genres (more than two) separated by “/”]
:small_red_triangle: TDOR Original release time
:small_blue_diamond: TDRC Recording time [especially meaningful for classical music] (Plex uses this for “originally available at”)
:small_blue_diamond: TDRL Release time
:small_red_triangle: TIT1 Content group description (See detailed description below)
:small_orange_diamond: TIT2 Title/songname/content description [movement] (See detailed description below)
:small_red_triangle: TIT3 Subtitle/Description refinement (See detailed description below)
:small_red_triangle: TLAN Language(s)
:small_orange_diamond: TPE1 Lead performer(s)/Soloist(s) [multiple names separated by “/”]
:small_orange_diamond: TPE2 Band/orchestra/accompaniment [especially meaningful for classical music] (Plex is actually misusing the TPE2 tag for ‘Album Artist.’ See additional comments below.)
:small_red_triangle: TPE3 Conductor/performer refinement [especially meaningful for classical music]
:small_blue_diamond: TPOS Part of a set [“2” for disc 2, or “2/4” if disc 2 of 4]
:small_red_triangle: TSST Set Subtitle - Useful for box sets, audiobooks, collections
:small_blue_diamond: TRCK Track number/Position in set
:small_blue_diamond: TSOA Album sort order