All music in a folder on a NAS; iTunes (well, Music) on an iMac with Catalina 10.15.5 AND the Sonos Music Library both pointing to the same music location: \\(Server)\music\Sonos.
I can play all the music; no problem.
There is an .xml music libary file in the folder on the NAS - may be a somewhat outdated manually exported file.
But when I update playlists on my Mac in Music - the edits are not updated in my Sonos library.
What is it I am overlooking?