I bought and added Track 1 from an album. Some weeks later I bought and added tracks 2–14. Tracks are FLAC with embedded metadata. In Plex, tracks are listed in this order: 2, 3, …, 14, 1. I.e. each track numbered correctly by Plex (it detected the metadata), but they are listed out of order (or perhaps by date-added order?).
How do I list and play the tracks in the correct album order?
Good guess! 1 alone had disk number 1 (others blank). Strangely, that was not present in the embedded metadata, it must have found its way into Plex some other way.
Anyway, fixed. Thank you!