My task here was to redesign a home stereo receiver interface that allowed users to switch modes, set and change radio stations, as well as adjust the equalizer. I started with just a paper prototype design that evolved to a Visual Basic implemntation. The Visual Basic implementation was iterated on 3 times. Between each iteration, I asked people at laundromats and coffee shops to be my users as they represented a diverse user population. Each user test showed me where there were problems and good aspects of the interface which I wrote up into Usability Aspect Reports. This iterative process resulted in an easier to use and more efficient user interface. The user tests generated user interface interactions that would not have come up had I not done the tests.