I have the E-Z Track Autoreversing System working well but the cord from the controller to the track is far too short, about 3 feet.  I need an extender cord but do not know where to get one.  Radio Shack has many audio cords that fit but lack the right wiring inside.  I tried one but no dice!  I need a cord with three little rings on the male end.

How do I extend the cord from the track to the controller another 6 to 12 feet?