Unit is not sending sound to my sound system as 5.1. Settings are correct. My audio out from the TV is SPDIF-Optical. From the TV, without Roku, it works. Works fine with apps like VUDU and Starz on my Smart TV. Worked with my Apple TV 2 for Netflix and Starz. I even tried connecting to a highly rated HDMI SPDIF Optical spliter. Nothing. Looks like both the splitter and Roku are being returned.