I have a Roku streambar that works fine. I just got an HDMI switch so that I could use the streambar for the sound for my Blu-ray player. The streambar and Blu-ray HDMI are the inputs at the switch. HDMI to the TV and audio optical cable to the streambar are the are the outputs.
The audio still works fine for the streambar but the Blu-ray sound still comes out of the tv speakers. Any thoughts?