I’m having a similar/same issue. It seems this was an issue previously that was fixed back in November. When I open Plex from the Sonos app, it says ‘Unable to browse music’. I am however able to search for artists, albums, songs and I can play individual songs. If I click on an artist instead though, it returns to the ‘Unable to browse music’. If I select a song it’ll play one then stop. I uninstalled and reauthorized but no change.
All apps are up to date, I believe. Sonos is on Version 14.8.1, Plex for Sonos is 3.0.0, and Plex is 1.26.2.5797.
