First of all! Hi! I'm new on here so be kind! I'll explain a few things first to make it easier for you guys to help! I have had a gaming pc I built nearly 3 years ago. I have purchased a Sony HT-RT3 5.1 Soundbar Set to accompany my games, I have used headsets and just don't get on with them. I'm weird like that. Anyway my questions are about to come. My soundbar inputs are analog, optical and HDMIarc. My monitor (LG34UM67) Doesn't support HDMI arc so I have to use optical audio. The soundbar supports Dolby Digital compression but not DTS. When I have the soundbar set to DD only the centre 3 speakers and the subwoofer work. I have changed the settings in the audio settings to output Dolby Digital but it isn't working. My motherboard is Asus Crosshair V Formula Z that has a built in sound card so it should work, right? Wrong! I've tried installing dolby digital drivers which didn't work, the sound sounded way off. I've tried using the HDMI out of my r9 290x but the only port on the receiver is HDMI out Arc so its not picking that up either. Does anyone have any ideas what I can do to make it work? Cheers!