Mike Garcen at MissingRemote has an excellent article/tutorial on Bitstreaming HDMI HD Audio Formats from your HTPC. From the article:
“The holy grail of getting Blu-ray from your HTPC to your home theater was always being able to bit stream HD audio formats, such as Dolby TrueHD and DTS Master Audio. When HDMI devices first started appearing for computers, they were extremely crippled--often times they could not pass any audio natively, requiring an internal S/PDIF cable from the motherboard to the graphics card to get any audio to the audio video receiver (AVR).”
He covers most of the things you’ll need to know if you want to get HD Audio like Dolby True HD and DTS-MA from your Home Theater PC. Give this one a read and don’t miss the comments to the article as there’s some great information in there also.
I personally am hoping for a HD Audio-capable extender from SageTV so I can do this with multiple TVs in the house without spending the extra cash the HTPC-route requires…
Read the full, MissingRemote Article: