OK ljhaze, I just contacted NCH again and here is what they had to say.
Soundtap Streaming Audio app is unable to work with the "Realtek" internal sound card, even if the specifications say it is not protected. If you purchased this within the last 30 days, we suggest you start a refund process here.
So, there we have it! Why didn't they tell us this before we purchased the app, what the capabilities or the incompatibilities are? Didn't they ever hear of telling people the "System Requirements" beforehand?
I hear you on that (not changing anything,) but at least we know now!