Lire de sons à la suite avec playSound

create a button (or something) that will start your sound playing:

// this.b is a movieclip

createjs.Sound.on("fileload", loadF.bind(this));
createjs.Sound.registerSound("./z_sounds/RS.mp3", "s1_id", 4);  // assign paths to your sounds
createjs.Sound.registerSound("./z_sounds/Buzzer.mp3", "s2_id", 4);
this.b.alpha = .3;

function loadF(){
this.b.alpha = 1;
this.b.addEventListener("click",f.bind(this));
}
function f(){
createjs.Sound.play("s2_id");
createjs.Sound.play("s1_id");
}