I have 2 Roku Premier Plus boxes. The first is hooked to my Marantz receiver which distributes the HDMI signal to the TV. I have a Harmony remote to control the volume for all devices even though I need to use the sonos remote or app to pick the music. I accidentally picked up the Roku remote while streaming Netflix and pushed the volume button on the side and the volume went up and down on the Marantz receiver. I'm pretty sure that is new with the latest Roku update but maybe it's been there the entire time? Anyway, I went up to my bedroom where I have a Playbar and Sonos Sub and ran the firmware update on that Roku box in hopes that it would also control the volume. It did not. That set up doesn't have an amp, the HDMI from my Roku goes into the TV and my HDMI from my DircTV goes into the TV and then an audio out goes to the soundbar. The Dirctv remote knows to send an IR signal to the Playbar to control volume but the Roku does not have IR. Does anyone know if there is a way to get Rokus remote to talk to the Playbar? Sonos I believe is operating on Wifi frequency and maybe Roku is using Bluetooth so it will never be an option?