HTML 5 Cordova Wrapper task

HTML 5 Cordova Wrapper using Xcode : There is one problem though. When I hold the keyboard down, it plays an error sound. The game works fine it's just this sound is so annoying. I need somebody to remove this feature so that the game doesn't make the sound. following points need to be fix: No sound Keyboard sound when held down Not maximized. Remember that this is MacOS and not iOS.