[randyvaughan]

It's wmr12 and it's working splendidly now. The one thing I had not tried (which I did immediately after making this post) was to reinstall the software.
The *only* difference I noticed between the before-and-after is this:
When it was not working, the "url" box contained "nvidia...etc," i.e., information about the sound card?
And I'd thought this strange because it had always--and does again--have "flash/rtmp - capture enabled" as the "default".
So I don't know if I inadvertently changed something or not, but again, it's back to working splendidly as always.
Great software, all of it!