Not having a Radio Shack in my area, I ordered this PS2 extention:
http://www.newegg.com/Product/Product.aspx?Item=N82E16826995032&nm_mc=TEMC-RMA-Approvel&cm_mmc=TEMC-RMA-Approvel-_-Content-_-text-_-N82E16826995032
The color coding on the wires is exactly the same as the Klipsch original. The pinout is exactly the same. If you order this cable, you can just match the wires by color. Just wired mine up and it works perfectly!
Thanks to all