Thanks, but I did know that. I wasn't getting any movement at all - which matched the no sound.
I did remember that I did have a mic. (I have a wireless mic for a video camera that this reminded me that I need to sell.) I plugged that in to the mic port on the computer and it worked just fine. So, I figured it was the hardware of my old E3500 webcam. Today I bought a Logitech C510 and plugged it in. It mostly works...
In guvcview I still don't get sound. In the sound control, audacity, and others, I get mic sound at a low level only. (Even with the setting at max.) In Skype though, it works just great. Since Skype is about the only place I actually need it, I'll consider this working - unless someone has any other ideas.