SPDIF to Analog? Is it possible? Please help!?

I have a Vizio E320VA TV and I want to hook up my COBY CSP96 Home Theater System. Is this possible? The only output I could find on my TV is a SPDIF output and the only input on the subwoofer is an analog. Please let me know what I need to do (if there is anything I can do). I am not a novice at this kind of thing, but I am clearly out of my depth on this issue.