Everyone knows that when you adjust the system volume of OS X you get a sound that says how loud or soft the sound is. My school is using a Mac to run the sound for the fall play and I need to disable this sound. I know it can be done, I read how in David Pouge's OS X Leopard: The Missing Manuel, but that's currently several miles away in south Philly at my sister's house. Can anyone tell me how to disable that sound? I think it might be a Terminal command, but like I said, I can't remember and I can't check. Please help, the show starts on Friday.