I have added my plex.tv account to Sonos and it's playing back now (I had a pfSense / UPnP issue but resolved now - statically NAT it!).
Playback seems to be fine and reliable, only issue I see now is that the activity is not showing in the server's status page.
.. nor in my Plexpy but I guess that's related to Plex server not displaying the session?
As none of my Sonos playback is getting recorded/recognised in PMS, the discover playlists are not showing any recent plays, nor (I assume) are they getting used in the other automatic lists in the discover section :(
I see same behaviour in 1.0.3.2461, 1.1.1.2675 and 1.1.2.2680
How to get it to?