I already have my PC connected to A/V receiver with optical cable. I have 2 large speakers. I was thinking of connecting my PC to TV too. I have SCART-adapter hooked to TV (TV-out) and that adapter includes audio-in. So would it be a good idea? Would i basicly have 4.0 setup then? Or how they would work then?

Edit: I think i would not be able to hear AC3 from TV, because AC3 goes through digital out (AC3Filter).