As long as your USB port recognizes your device (example - when I plug my headset into the USB, the computer recognizes as 'Logitech USB Headset'), then so should the program. Try setting the record device as Mic. That worked for me.
When I first tried the program, I was not recording although the program looked like it was. I found I had to go back into the settings and try a few different choices. Ultimately, I just clicked on Mic and the Logitech headset worked both in record and playback. So it may just be in the record settings. Try a few different choices other than what you think the right one is. You may solve the problem.