Updated to remove the trial and error portions
I bought this from Radioshack for $3.
Then I took one of these:
cut the headphone jack off and tried wiring it together
Now here's the schematic on the back of the bag
We know that the ring/red is right channel and the tip/white is left channel
Now, inside the sheathing, there's only 4 wires:
red + copper
white + copper
Inside the cable when we stripped it, there's a layer of of copper, then another covered layer (red or white sheath)
What we did was join the copper layers as one cable and solder it together
then we took the red wire and the white wire and connected them up as so:
Pins 3 and 4 are not used.
Modified by Chapel at 8:04 PM 3-8-2009