Guys! I got it! There was a little 'channel' box that popped open to the right. Never had it on my Mac, didn't know what it was or why the settings are relevant...still don't, but when I clicked on the number box the sound came on. ??? This will not allow me to insert a screen clip of it.
Never mind... after going away and starting the audio over upon my return, again... it does not work. What the what???