Originally Posted by LastButNotLeast
That's what it ran: Dolby and DTS. Sorry, but I've grown accustomed to my TrueHD and HD-Master, which I wasn't getting with that card. Why a "graphics" card has such an effect on audio I will never understand. And I don't have the patience for this nonsense that I used to, so, as I said, the card is out and packed away.
BTW, did you find your perfect CPU over the weekend?
That's weird. The graphics card should just "pass through" the audio to your AVR and let the AVR decode the audio signal. Shouldn't matter if it is DD or True-HD. It should be digital (ie. 1s and 0s) that get simply passed though to the card, onto the hdmi cable and to the AVR. it is then the AVR that decodes the 1s and 0s to sound.
Did you try to see if there is an "audio pass through" setting on the graphics card?
When the AVR is plugged into the graphics card via HDMI, open the sound settings in Windows. In the window at the bottom, it should show all the available audio codecs that the AVR can do, not the graphics card.
From page 176 of Assassin's blog:
To setup the sound in Windows 7 right click the speaker in the bottom right of your desktop and select “Playback Devices”. Here you should see your HDTV or AV receiver. Make sure to set this as “default” if it is not already done for you to tell Windows you want to use the HDMI that is connecting your HTPC to your AV Receiver as your default device.
For this example the HTPC is connected to a Denon AV Receiver.
Now if you select the “Supported Formats” tab you should see all formats that are enabled. In the previous steps I have shown you how to install everything you need and all HD codecs should be enabled assuming your AV receiver is capable of HD Audio. If it is not capable of these formats then they likely will not show as being supported. If you have an HD Audio capable receiver and these formats are not showing up yet don’t worry just yet. Let’s complete the “Engine” portion of this tutorial (below) and then try checking these settings again.