Q: Is there a way to add a sound when the user positions the mouse over menu and submenu items? How do I go about adding this?
Thanks!

A: Here is an example of how to use sounds on mouse over and mouse click on menu's items using the rollOver and onClick events.

var soundOnOver:Sound = new Sound();
soundOnOver.attachSound("soundEffect");

var soundClick:Sound = new Sound();
soundClick.attachSound("soundClick");

onRollOverHandler = new Object();
onRollOverHandler.onRollOver = function(evt){
    soundOnOver.setVolume(40);
    soundOnOver.start();
}
accTreeMenu.addEventListener("onRollOver",onRollOverHandler);


onPressHandler = new Object();
onPressHandler.onPress = function(evt){
    soundClick.setVolume(20);
    soundClick.start();   
}
accTreeMenu.addEventListener("onPress",onPressHandler);

Files: AccordionTreeMenu_With_Sound.zip