Thanks for sending along the info, though I'm still not sure that's what you'd want to use for mic cables. I'm not trying to discourage the diy route, but I think you'd be better off with a 4-conductor plus shield cable (eg, Belden 83348) rather than using strands of unshielded hook-up wire. Or if you don't want to go the quad route, something like teflon-jacketed silver-clad two-conductor plus shield such as the Belden 83319 or 83320.
If you did want to go this route with hook-up wire, you'd want to shield the cables. You can get copper-braided shielding at various places, I think L'il Kim posted a vendor somewhere recently. I don't know if there is a place to get silver-clad copper shielding, or even if it makes that much of a difference. Ideally, you'd want to twist the hook-up wires and then insert them into the shield and then cover them with one or two layers of techflex. All in all, that sounds like a tremendous PITA to me. If I were to do the diy route, I'd look for the raw cable stock I listed above or perhaps the Belden 1804a.