Thanks a lot for all the advice.
I’m not sure exactly what I’m doing wrong. I have been using iTunes or perhaps audacity to play back the wave files. I also end up having more than one program open using sound that way. So Audacity might be open at the same time as real band. Interesting that real Band gives you the opportunity to “test“ the wave file. How are you supposed to test the wave file if you can’t open audacity at the same time?
OMG I am so confused.
One interesting fact is that once I lunch the sound card so that I get no sound. I have to log out and then log back in as myself. Then the sound card comes back to life. So something about activating the sound card in more than one application is causing a problem. This is very weird.