Digitally Connecting Soundblaster audigy 2 soundcard to sonydav s550 theatre system
 

Hi, I have a Soundblaster audigy 2 im not sure which model but it has a pink digital out audio socket on the back of it. My sony system has a digital optical in socket on it. I am having problems connecting them. I brought the following
http://www.maplin.co.uk/Module.aspx?...gital&doy=26m5

as it has a miniplug adaptor which i thought I could use on one end to connect to my soundcard digital output and connect the other end to my home theatre system. Did I get the wrong wire? If so what wire will I need to connect them, will miniplug not fit on the soundblaster digital out, what does? I have messed around with the control panels with no luck. Anyone have any ideas, by the way Im new to this. Thanks in advance