I own a Sonny Home Theater System (HTS). The Sonny HTS has two HDMI IN connectors, and one HDMI OUT connector. The cable box is connected to an HDMI IN, and the TV is connected to the HDMI OUT. When I connect Chromecast to the 2nd HDMI IN, I get video on the TV, but I do not get sound on my HTS. By the way when I connect Chromecast to my TV it works perfectly. Has anyone connected a Chromecast to and HTS? I would like to use the surround sound from the HTS when I use Chromecast.