At the moment i built my first HTPC connecting to a Demon 1910 AV Amp and 5.1 Speakers. So far the PC composes of: Gigabyte GA-73PVM-S2H GeForce 7100 Socket 775 Intel E2150 (I think) Asus HDAV1.3 Slim and Window7 as OS. After a bit of mesing about with getting the right drivers for the ASUS I managed to get my mkvs working in MPC-HC. But i dont think its going through the right sound format and my sound card is manlipuating DTS / DD Sound. To make a few things easier for you, i've taken some screen shots which you might be able to tell me what to you. Xonar HDAV1.3 Slim Sound settings within Windows FFDshow Tryout for HDMI pass through I use MPC-HC to play all of my HD content: When i play any DTS videos, my amp say "Multi DRCT HDP" instead of "DTS" Does this mean its not playing the audio in the right format? Also on the Denon amp, within the menu option should i be setting the input to "Auto, DTS, PCM" I prosume PCM is the right one?