I've got a few things that I want to shorten the cable on too. Winding the cable up doesn't help, because then I've got a big wad of cable. I want the cable shorter so that the extra cable just isn't there. This is because I like to stick a DAP in my shirt pocket and move around the house, go out on the porch, go to the fridge, etc. As things are, I not only have the DAP in my shirt pocket, I've also got a large tied-up clump of cable crammed in there too. For this purpose, 30" of cable is plenty. But when I'm sitting down, I want to plug 'em into an amp next to my favorite seat. For that, 30" is not quite enough. So, I'm thinking 54" to 60" is a good length for me.
Rather than discard the extra, I want to make a simple cut in the original and install a mini-plug and mini-jack on the cut surfaces. This way, I can reassemble it and regain it's longer length if/when appropriate. I see lots of places to get high-quality mini-plugs. It's the corresponding cable-end mini-jacks that seem harder to find.
Whenever I do this, does it matter which wires I connect to which terminals on the plug and on the jack? Or is it fine to do it any way, just so I match them up correctly on both the jack and the plug? 'Anything else I should know? I've learned lots of good things the hard way, but I'd rather not repeat whatever mistakes you might have made already.