If there is no Navigation Bar at the top of your screen (it has a gold color) then you probably
arrived here without going through the Opening Screen of the Hartman Web Site, which sets
the music program in operation. You can put the Navigation Bar in play by clicking on this:
If so, some program has messed with your Windows "Synthesizer" - probably muted it. To see if this is the case, right click on the little yellow speaker in the Task Bar and choose "Open Volume Controls". If the slide control under the "Synthesizer" heading is at the bottom, slide it up to the top, and music should begin playing.