Sound Problem

import greenfoot.*;  // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)

/**
 * Write a description of class Crab2 here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class Crab2 extends Animal
{
    /**
     * Act - do whatever the Crab2 wants to do. This method is called whenever
     * the 'Act' or 'Run' button gets pressed in the environment.
     */
    public void act() 
    {
        move(4);
        checkKeys();
        tryToEat();
        

    }  

    /**
     * Check if keys are being pressed. Press left turn left. 
     * Press right turn right.
     */
    public void checkKeys()
    {
        if (Greenfoot.isKeyDown("left"))
        {
            turn(-5);
        }
        if (Greenfoot.isKeyDown("right"))
        {
            turn(5);
        }

    }

    public void tryToEat()
    {
        
            if (canSee(Lettuce.class))
            {
                eat(Lettuce.class);
                Greenfoot.playSound("slurp.wav");
                createNewLobster2();
                createNewLobster2();
                createNewLobster2();
                createNewWorm();
                createNewWorm();
                createNewWorm();
                createNewWorm();
                createNewWorm();
                createNewWorm();
                createNewWorm();
                createNewWorm();
                createNewWorm();
               
          
        }
         if (canSee(Worm.class));
        {
        eat(Worm.class);
        Greenfoot.playSound("slurp.wav");
        }
    }
    
    public void tryToEatWorm()
    {
    if (canSee(Worm.class));
    {
        eat(Worm.class);
        Greenfoot.playSound("slurp.wav");
    }
    }
    
    

    
    /**
     *  Create a new lobster2 and place it randomly
     */
    private void createNewLobster2()
    {
        Lobster2 newLobster2;
        newLobster2 = new Lobster2();

        World world;
        world = getWorld();

        int worldWidth = world.getWidth();
        int worldHeight =world.getHeight();

        int x = Greenfoot.getRandomNumber(worldWidth);
        int y = Greenfoot.getRandomNumber(worldHeight);
        world.addObject(newLobster2, x, y);
    }

    /**
     *  Create a new lobster2 and place it randomly
     */
    private void createNewWorm()
    {
        Worm newWorm;
        newWorm = new Worm();

        World world;
        world = getWorld();

        int worldWidth = world.getWidth();
        int worldHeight =world.getHeight();

        int x = Greenfoot.getRandomNumber(worldWidth);
        int y = Greenfoot.getRandomNumber(worldHeight);
        world.addObject(newWorm, x, y);
    }
}