I have just had the strangest thing happen. I have a Zenith mk3 that I control using Sense. No Roon. The amp was on, but noone was playing any music. In fact, no music has been played today at all. I'm the only one that has the Sense app in the house. Whilst preparing dinner tonight, suddenly out of nowhere a song starts to play. It stopped after about 10 seconds or so. My phone was in another room. When I checked the Sense app, it showed the last so as a blank, time played as 00:00/00:00, and quality as "OGG VORBIS (SPOTIFY)".
I am totally perplexed!