Sound preloader bar

is any way to make a preload bar for loadSound command where:

[size=1]//actions:[/size]
[size=1][/size]
[size=1]w = new Sound();
w.attachSound(“crossroads”);
w.start(0, 100);[/size]
[size=1]x = new Sound();
y = new Sound();
z = new Sound();[/size]

[size=1]//where button 1:[/size]
[size=1][/size]
[size=1]on (release) {
x.stop();
x.start(0, 5);
}[/size]

[color=black]for button2:[/color]

on (release) {
stopAllSounds();
x.loadSound(“music2.mp3”, true);
}

?
I can not make it to work…