Plex connects correctly. Browsing through Plex works too. But playing anything does not work at all.
plex server is running on Synology in Local Network with latest version.
Sonos is updated to latest version too.
Plex does work outside the network. Audio playback is used locally and outside network without problems on Apple TV , Plex apps on mobile devices etc.
I tried to play on any of my Sonos speakers but when I want to start playing, nothing is happening.
Within the Mac App, when I try to start playing a track, I am getting the following error: Can not play [trackname]. Can not connect to Plex
