I received my speakers last night and they do sound amazing. Everyone wasn't wrong about how loud they are either. The setup was easy along with getting the additional 2 remotes paired. I did have an issue with the sync as the lips were off a fraction of a second. Switching between apps/channels eventually got rid of that.
I tried the Fast Start feature with my Spotify Premium account, but couldn't get it to work. The instructions says when you get to the play screen, press *, but no menu comes up to turn the TV (55R617) off. When I turn it off with the power button, the app stops playing. Bluetooth stream works from cells and Surfaces. I haven't tried the mirroring feature yet. Anyone have any tips to get it to play Spotify, Pandora, etc. with the TV off without casting from a mobile device?