Regular DD/DTS or the lossless version of them?
The onboard Realtek 889A audio chipset does regular DD/DTS very nicely over optical digital out (onboard).
As I mentioned above it even does DTS Audio (i.e. bypasses kmixer in WinXP; Vista doesn't have kmixer).
Lossless bitstream DD/DTS seems to be HDMI only by design (regardless of motherboard/chipset).
Decoded analog out seems to be fine using latest PowerDVD.
Diogen.
If it goes through the Realtek, it is regular DD or DTS. Those intel-based boards do 8ch LPCM because the SiL1392 tranceiver used for HDMI out is connected to the G33/G35 northbridge for video and to the HD-audio output on the southbridge ICH9(R) for audio.
F