MovieClip Button RollOver Sound?

Hey,

I have created a MC button & i was wondering if anyone could tell me how to attach sound to the rollOver event? Current AS is;
(AS in [COLOR=Red]red[/COLOR] is where i need help, if anyone could show me the AS for rollOver sound i would b very thankful)
this.onEnterFrame = function(){
[COLOR=Silver]
if(rewind == true){

prevFrame();

}

}
[/COLOR][COLOR=Red][COLOR=Silver] [/COLOR]
this.onRollOver = function(){

[COLOR=Silver]rewind = false;
play();
[COLOR=Red]}[/COLOR][/COLOR][/COLOR][COLOR=Silver]

this.onRollOut = function(){

rewind = true;

}[/COLOR]