There's a known issue that once you cast music from spotify to soundbar, the soundbar will turn on each time you run spotify, even if not casting music. I was told that this is stricly Spotify's app issue and posted thread on their forums (see link below). Recently they replied the following:
"We've reached out to the team backstage and we've been informed that this is something that should be fixed with the latest firmware update from Samsung."
Is this true? I don't see any new firmware to download. I have Q800T with ver1019.5 firmware released in april. Is there a new update being rolled out ?