I'm using a Windows keyboard with numeric keypad hooked up to a mac pro. When I use the keypad to type numbers into applications, whenever I hit the 1, 3, 7, or 9 keys my mac plays the sound labeled "Funk", waits a few seconds and then plays it again. It seems like there is some 'feature' that is activated but the computer provides no information other than the sound. What is causing this and how do I turn it off? Thanks! EDIT- The number keys work fine, they output the number I press, but those particular numbers also produce the sound.