My $199 Xbox outputs Dolby Digital 5.1 surround sound, which I can be connected to any surround amp, receiver, or speaker system that has optical digital input and DD5.1 decoding capability, without having to connect six separate analog cables. Why then does no manufacturer make a sound card for the PC that can *encode* (not decode, but encode) DD5.1? All the existing cards, including high-end ones such as Creative Audigy II and M-Audio Revolution claim to have digital outputs, but they are useless as they only handle two channel stereo, not 6 channels for surround!!! I know that the nVidia nForce2 chipset can encode DD5.1 (since it was originally made to be used in the Xbox, before Microsoft switched to Intelâ€™s processor), but I need a sound card, not a new motherboard. I also know that Creativeâ€™s cards output two separate digital channels (for a totally of 4 channels) which can be connected using a proprietary cable to certain Creative brand speakers (in my case the FPS2000), but they are useless for connecting to a standard multichannel amp or speaker systems.