Hello, I'll list my hardware: Previous Sound : ATI High Definition Audio Device - From what I can tell this was the HDMI output on my graphics card. New sound card : Creative Sound Blaster X-Fi Xtreme Audio 7.1 Sound Card I've installed just the drivers for the new card because the disk (as usual) came with looooads of stuff that I don't want on my new pc. I watch Films and TV shows and also play games here and there so I wanted a good sound card which could output digital sound to my Receiver (Sony STR DG820) Now I've gone SPDIF from the sound card to the receiver and it sounds OK (Can't tell a difference really from before) When I play a film in VLC with a DTS 5.1 channel, I select this in the audio drop down menu yet my receiver only notices a 2.1 feed coming in. When I open the same film in boxee.app however the receiver notices that it's a DTS 5.1 channel and even displays this on the Panel. Any ideas why this is? Have I done the right thing in just downloading the drivers for the card? Should I connect the card differently to the receiver? Am I getting the most out of my card? These are questions I would greatly appreciate an answer to. Sorry if it's long winded. Thanks.