Might be a stupid question, but I'm a newbie! I just purchased a Sony HT-SS370 home theatre system to hook up my KDL-52Z5100 Sony TV and my Sony Blu-Ray player via Bravia Sync with HDMI cables. Everything works, except I have my TV connected to the internet directly - now when I try something like Netflix or Amazon video, I get no audio - shouldn't it be coming out of the receiver? I think I have all of the settings correct (HDMI switched to ON, Audio Return Channel set to ARC ON) - but still nothing. Do I need to connect the optical audio out from the TV to the receiver? I would have thought that the HDMI cables would handle this. Help!!