Mac;

Oh, thank you. Singing without hearing is really difficult. I will give that a try. Ok, I am using Vista, and when I click on what you said I get a volume mixer box. The left side says "Device, speakers" with a chance to mute; and right side is "applications" windows sounds, with a chance to mute. Since I always use headphones, maybe I could mute the speakers? Is this what you are meaning?