In that article he mentions Landscaping wire.
"Here's some typical low cost wire that's available today. The wire at the left with the heavy insulation is 12-gauge low voltage cable that's used for garden lighting accessories. It's 1/2" wide and cost 28 cents/foot."
I purchased 100' of this stuff for $40 at Home Depot. Best part is its made in the USA. Its stranded and made of copper, that's all I need to worry about, right? It is returnable since its pre-packaged not cut to order, but I doubt I will need to. Thanks for any info. The HD assistant told me I needed to buy specific speaker wire since its twisted and that is the best for vocals. HAH!