I have a 5.1 system using a Sonos Playbar (not the beam). I have a Sony Bravia 850B and a Comcast Xfinity cable X1 box. I primarily use the Xfinity remote to control to TV and volume (and it was set up using the Sonos app). However, I notice that (it seems) over time that that I've got to crank up the Volume that shows from the remote to almost 100 to get adequate sound. When this happens, and I look at the Sonos app volume, it's inevitably really low and raising it even slightly from the app makes a dramatic difference in the volume of the TV. In other words, its as though the two volume setting are not properly synchronize and are operating at different scales. This would not be so bad if once set they'd stay that way. HELP! Any ideas? This has been going on for well over a year and I finally got around to asking about it. My software (on all devices) is up to date.