I just completed a build of a new PC tower for the surround sound theater room in the house here. Everything is working fantastic with this computer except for a problem with the optical out with the sound card. The card is a Creative Labs Sound Blaster X-Fi Titanium Fatality Champion card. All of the analog output features of this card including the front panel controls and inputs/outputs are working extremely well. The problem I'm having is only with the optical out at the back of the machine. When I plug a good Toslink cable to the A/V amp I do get a signal as the A/V amp indicates on it's front panel the Dolby Digital and dts when I switch it around in the control panel for the card. Also I do get very faint sound in the right front speaker only when the cards volume control panel is turned all the way up and the volume is turned all the way up on the A/V amp. I have installed all the updates for this card and set the output frequency of the card to match what the amp wants. Any idea on what may be going on with this card?