OK. I have an Audigy 2 ZS sound card and a Logitech Z-5500 digital 5.1 speaker system.

I'm confused about hooking this set up digital. The Creative Start Guide shows the digital output of the sound card as a 4 pin miniplug.

The Speakers show both a coax digital input (RCA) and a optical (Toslink).

Where do I find a coax cable with RCA male jack on one end and a 4 pin miniplug on the other? I have a 6 ft coax cable with RCA jacks on both ends. Where am I going to find that adaptor that has a 4 pin male miniplug on one end and a female RCA on the other to hook up that cable?

Similarly, the same issue with the optical. I would need a 4 pin male miniplug on one end and a toslink on the other. I'm searching around and don't see what I need.

Also another question. The RCA jack has me a bit baffled. I always assumed that an RCA jack only carried a mono signal. How does that jack carry a 5.1 signal (being that the sound card has a 4 pin miniplug on the other end)?

I sure would appreciate some help as I can't seem to find any. Thanks.