Camtasia 9 audio playback issue

I initially had this issue. I found that when I first used the recorder and selected the microphone, I had to also go to my windows operating recording devices and make sure the microphone was also selected there. I actually unselected it and then reselected it and made it the default.  I only had to do this once. It seemed that once the recorder had the correct microphone selected and the operating system had the same microphone selected as the default. Everything synched together. Thereafter, it didn't matter if I used one of my other mics for something else. The recorder knew where my mic selections were stored.