A little update and a question. It turns out I have to order the attenuator since it doesn't seem to be available in any stores where I currently live. This is going to take some time (still haven't received the pick-up I ordered), and I was hoping to have something together by Tuesday. Therefor as someone suggested I got hold of a potensiometer and a regular mini jack cable and I was hoping to fashion out a variable resistor.
My question is about the brazing. The pot has three terminals and I've sliced the Right cable and connected the input to terminal 2 and the output to terminal 1, leaving the ground cable intact.
Have I done this correctly? So far I've only been able to test it with my Ipod and I can now control the volume with the pot.