posted this on July 13, 2011, 20:38
Yes, you can. Just perform a three-finger tap to open the Controls menu, and then you will be able to turn the sound ON/OFF on your iPad by using the Sound option .
Note that this button turns the sound ON/OFF on the iPad only. You can adjust the sound for the PC independently by using the Windows default "Speaker Manager" tray icon for your particular Windows® OS.