I have a playbar and a play 1 in different rooms running wifi off a sonos adaptor connected to my router. The playbar plays tune-in radio and Tv no problem (the TV is direct connected to the player). If I try to play a spotify song on the player it fails and I get the error "Unable to play 'track name'' - the connection to Spotify was lost." A workaround we have discovered is to start the track on the play 1 (which works fine) then group the play 1 and the play bar and set the volume of the play 1 to zero and the music then plays ok through the playbar. This is really annoying and only started happening recently - less than a week - maybe coincidental with a recent sonos update? Any ideas sonos staff?