I have two sound cards both have SPDIF digital output, one is connected to AV amp while the other is connected to decent stereo system. Is it possible to output audio using both sound cards? I have the idea to output AC3/DTS passthrough to my AV amp using one sound card, and decode the AC3/DTS and output the front channels only to my stereo system.
Do you think this is possible??? Thanks a lot in adance!:):)

I'd look at http://software.muzychenko.net/eng/vac.html