I am for using multiple devices for control (Ipad, android tablet, 2 android phones, and a laptop). New user here and I havve no idea how to stop the system (Play 3 with a bridge). I force closed the control app on the android phones and android tablet, shut down the laptop and simply closed the app on Ipad but it won't stop playing. I have to physically mute the Play 3 to not hear it but I'd rather stop broadcasting Pandora thru the Sonos app to the Play 3. How do I stop it from playing? Is there a way to close the app so it no longer tells tells the bridge and play 3 to play?