I hooked up my Fortissimo II to my Sony DA555-ES reciever via optical outputs, and i am only getting 2 channel stereo. I am not trying to watch DVD's on my pc, i just want to get surround sound. When i set my fortissimo control panel settings to "Main output" and do a 4 speaker test, my reciever only detecs 2 channel audio. If i set the setting to Digital Source, and do a 4 speaker test, my reciever still only detecs 2 channel audio, but i get NO SOUND. I bought the card OEM so i dont have any retail cables and such that comes with the card. Does the fortissimo 4 speaker test only work on the speaker output, and not the optical. Ive tried all the troubleshooting procedures on the website (not many) and it still doesnt work. I have not tried passing DD to the reciever because i do not have a dvd-rom drive to test the digital source (hence why i am most likely not getting any sound at all when i set my option to digital source. HELP!!!