Zapp,
As you know some of us have been in the same situation as you. Mostly setting up a blu-ray enabled PC isn’t that difficult. With a decent video card you can accomplish your task easily.
However there are drawbacks using your PC to play blu-ray instead of using a stand alone player and that falls into the audio aspect of your playback. If you’re looking to taking full advantage of the blu-ray features especially the TrueHD audio at 7.1 surround sound you’ll have to do a bit more than simply installing the drive and expecting everything to function properly. Currently the problem lies in the fact that PC’s cannot encode any Dolby TrueHD, DTS-HD, or DTS-HD Master Audio over HDMI. Now a properly outfitted PC running CyberLink’s PowerDVD 8 can decrypt and decompress them and output it as uncompressed 8 channels LPCM (Linear Pulse Code Modulation) to HDMI.
Any newer Nvidia card that is outfitted with HDMI does carry audio but it’s a 2 channel LPCM. ATI’s RV7xx-series is the only video card that is capable of carrying 8 channels LPCM audio over HDMI. Of course I am talking if you are connecting your PC up to an A/V system that can support 5.1 or 7.1 DTS signals. If you’re simply using headphones then disregard what I am about to tell you.
There are 3 scenarios to connecting your PC to an A/V system and being able to take advantage of the HD audio.
Scenario 1: Onboard Audio w/ Dolby Digital Live or DTS Connect
It’s nearly as simply as connecting an S/PDIF from your onboard audio adapter to you’re A/V receiver. Most motherboards have incorporated HD audio for quite some time now. All you really need to do is open Windows Control Panel and simply change your speaker configuration to a 5.1 or 7.1.
Scenario 2: Sound Blaster X-FI Card
You have two options here.
Option 1: connect one of the cards discrete analog outputs to you’re A/V receiver’s multichannel inputs however you will need three cables and each with a 1/8-inch stereo connecter to stereo RCA for 5.1 while four cables for 7.1.
Option 2: Install the Dolby Digital Live Software and use the X-Fi’s S/PDIF output.
Scenario 3: Radeon Video card w/ HDMI
Any HD 4600 or 4800 series GPU you can connect a DVI-to-HDMI adapter to you card and send uncompressed 7.1 channels of digital audio over HDMI.
I hope this adds to the confussion…
