Jimmy,
You need to forget that computer son and do what I do at a gig like that.
I just walk up to the mic with a 'coustic guitbox in my hand and say folks, sorry I ain't go no fancy equipment, but I'm about to show you how it's done.
That how we do it in North Kalalacky anyhow.
Give that a spin. I don't know nothing 'bout them wave files and all but I can dang sure guarantee you I can burn the place down.
Peace.