It just occurred to me, if this feature request is fully and properly implemented, it would provide a path to resolving another shortcoming I have mentioned as well:
“Let’s say I want to create a playlist containing several symphonies by various composers. Currently I can add all the files for all the movements for all the symphonies to a playlist, and I can play them in order. But if I want to randomly play this playlist, but keep each symphony together and in order, I can’t do it. In the current feature, random playback would randomly play individual movements.”
If the TIT1/TIT2/TIT3 fields are supported as described in the OP, and Plex allowed users to add content groups (TIT1) to playlists, it would be possible to create playlists that could shuffle complete symphonies rather than the individual tracks.
