I recently bought an SB X-fi Surround 5.1 USB card hoping that it would fix my 5.1 issues that i was having with Asus G73Jh which could not produce audio to all of my Logitech Z5500 speakers. Now, i got the card to install ok and it all seems to be working expect sound will only come out of two speaker, L Front and R Front. I am using the optical out on the card into the optical in on my Z5500 control console but the screen of the console only says that it is "stereo" meaning only two speakers. I am not sure what is the issue has i have tried reading the manual, an it say nothing about the optical, and i can't seem to get the software to do much at all. Am i missing something? has anyone used this card successfully?