SB Live Platinum w/ 5.25 drive bay thing PROBLEMS!

Ok,
I have an SB Live Platinum with the controller and input/output thing that attaches to the actual card in my PCI slot and goes in one of my 5.25 inch drive bays. Making it and the input/output, volume control and surround sound control accessablr from the front of my computer. My problem is that the 5.25 inch drive bay thingy DOESN'T WORK!!! I hooked it up all right and plugged in my speakers. My speakers have Dolby 5.1 and surround sound with DIGITAL INPUT, like the 5.25 inch thing has DIGITAL coaxial OUTPUT (It looks like 1 RCA Cable). I hook it up and nothing!!!! I try plugging my DOLBY DIGITAL 5.1 SURROUND SOUND speakers into the ANALOG OUTPUT in back of the computer where the actual SB Live PCI card is. That works but it SUCKS!!!! I want Surround Sound!!! I paid fer it, WTF!!! I can only use my Dolby 5.1 250 dollar speakers for stereo sound!!! The speakers work GREAT on my DVD player when I am watching them on my TV. Dolby 5.1 and all that with the Digital Coaxial cable going from the DVD player to the speakers. Any suggestions?
THX

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