I have an iTunes/Music library that is stored on an external drive. Running Catalina, up to date (10.15.7). Running Sonos macOS app, up to date (12.1). I try to add the library using the recommendation here but, while the internal drive albums are appearing, none of the external albums appear. I’ve tried closing Music removing the libraries from the Sonos app in various ways with no luck on getting the external albums to appear. There are only around 3k files in there, organized by Artist, as per Music’s scheme.
Thanks.