sorry, 1m isn't right, dunno where I got that from. its closer to 2m now i've roughly measured it, search for it on google, i'm sure it'll be mentioned accurately somewhere. All the speakers plug into the sub, which contains all the amps etc... The control unit connects to the sub through a cable similar to a monitor cable (the 2m one). All those cables are provided.
That sound card has one of those minijack shaped optical plugs, which I guess is this:
http://www.amazon.com/6ft-Toslink-Mi...4488417&sr=1-4 actually I'm pretty much certain that's what it needs.
That's all you need.