I have a custom gaming PC in my office, and I bought a 25 foot HDMI cable so I could use my tv as a second screen occasionally and use Kodi/other media apps to play kids movies for my daughter in the living room. I figured out everything except how to get the sound to play in the living room. My tv is a 4k samsung that is connected to a sonos playbar via optical cord. Any sound that plays through the tv automatically comes through the playbar. Can someone help me please?