HELP with stopping music

Hi, how can i stop my background music from playing when i replay my clip?

I dont want stream to be set because i want the same bgd music for the entire clip.

Im using action script 3.0

Here's my actionscript so far

stop();

replayButton.addEventListener(MouseEvent.MOUSE_UP, playt);

function playt(evt:Event):void {

          play();

}