Thanks mitch for you quick replies and trying to help me.. im gonna be ordering another cable, got my second unit and im going to hook it up to my home stereo i listen to while listing crap on ebay..
I think i figured out the problem after an hour or two of searching. It is a winamp problem, well either that or sound card related. If you have a good sound card (sound blaster) you can set the software up to relay sound to all channels. Unfortunetely I was being cheap and bought a diamond sound card and the software doesnt let you output 2 channel stereo to 4 channel.
There is a plugin that was written by a board member years ago for winamp for just this problem, i havent fully gotten it working yet, but I do hear sound coming from all speakers, but its distorted. Im actually going down to do some more adjustments in the car here in a few minutes.. if i cant get it working ill be buying a REAL sound card tonight.
ill keep anyone who cares updated.. i cant be the only one having this problem.