How do you get scammed by A/V retailer?

The answer is easy, ask them a dumb question, that you need a coaxial cable? Circuitcity guy will be happy enough to throw you a $20 cable for your digical adventure. Basically a coaxial output contains RAW audio data from a source an dthat has to be decoded via DA decoder to get audible sound. Now what I found, is plain and simple, any RCA cable will just do fine as a coaxial cable, period. Shame on me, I did not know that before and spend $$ to buy a so called digital co-axial cable.