I don't know why the sound in my code isn't working. This is my code.

What is the goal of this program? Right now, this is what the program does:

As soon as any key is pressed, an object starts bouncing from side to side on the screen, playing a sound every time it hits a wall.

I'm not sure if this is the intended performance of the program, but I can hear sound every time the object hits a border, so the sound is working. Just remember that in order to enter keystrokes into a KA program, you must first click on it before you type anything.

If you want to make function always run instead of you having to press a key, just remove the keyPressed = function(){};. I would advise removing it anyways since it is generally not a good idea to have a function inside a function. Here is what I would suggest.

//these are the variables
var y = -200;
var x = 200;
var speed = 10;
draw = function(){
    background(151, 244, 247);
    fill(255, 0, 0);
    ellipse(x, y, 70, 70);
    fill(255, 200, 0);
    ellipse(x - 15, y - 15, 10, 10);
    ellipse(x + 15, y - 15, 10, 10);
    line( x - 15, y + 15, x + 15, y + 15);
    ellipse (x, y - 32, 70, 30);
    fill ( 255, 200, 0);
    ellipse ( x - 15, y + 30, 20, 20);
    ellipse ( x - 0, y + 30, 20, 20);
    ellipse ( x + 15, y + 30, 20, 20);
    ellipse ( x + 10, y + 40, 20, 20);
    ellipse ( x - 10, y + 40, 20, 20);
    ellipse ( x + 2, y + 50, 20, 20);
    //this makes is move
    if(y > 350){
        speed = -10;
        playSound(getSound ("rpg/hit-thud"));
    }
    if(y < 50){
        speed = 10;
        playSound(getSound ("rpg/hit-thud"));
    }
    
    y = y + speed;
    
    if(x > 350){
        speed = -10;
        playSound(getSound ("rpg/hit-thud"));
    }
    if(x < 50){
        speed = 10;
        playSound(getSound ("rpg/hit-thud"));
    }
    
    x = x + speed;
};

keyPressed = function(){
    //this resets the variables when a key is pressed
    y = -200;
    x = 200;
    speed = 10;
};

So, the keyPressed function works outside fo the draw function. Whenever you press a key, everything inside the keyPressed function is run once. In this case, it just changes the x, y, and speed back to their original values.

Hope this helps,

Daniel