How to get a sound to play when I click an object

import ddf.minim.*;
int rad = 30;                                   // Width of the shape
float xpos, ypos;                               // Starting position of shape
float xspeed = 4.5;                             // Speed of the shape
float yspeed = 4.5;                             // Speed of the shape
int xdirection = 1;                             // Left or Right
int ydirection = 1;                             // Top to Bottom
int score=0;                                     //Inital score
int lives=5;                                     //Number of lives you start with
boolean lost=false;                              //Have you lost yet?
int speed=1;
PImage bg;
int y;
AudioPlayer player;
Minim minim;

void setup()
{
  size(1297, 736);
  minim = new Minim(this);
  fill(0,0,0);
  noStroke();
  frameRate(60);
  ellipse(xpos, height/10,100,100);
  xpos = width/2;                               // Set the starting position of the shape
  ypos = height/2;
  bg = loadImage("stem.jpg");                   //Load Image (jpg,png,gif)
  player = minim.loadFile("Song.wav");          //Load Audio File (mp3,wav)
  player.loop();

}

void draw()
{
  background(bg);

  xpos = xpos + ( xspeed * xdirection );         // Update the position of the shape
  ypos = ypos + ( yspeed * ydirection );


  if (xpos > width-rad || xpos < rad) {          // Test to see if the shape exceeds the boundaries of the screen
                                                 // If it does, reverse its direction by multiplying by -1
    xdirection *= -1;
  }
  if (ypos > height-rad || ypos < rad) {
    ydirection *= -1;
  }


  ellipse(xpos, ypos, rad, rad);                    //Draw the shape
  text("score = "+score,10,10);                     //Print the score on the screen
  text("lives = "+lives,width-80,10);               //Print remaining lives
  if (lives<=0)                                     //Check to see if you lost
  {
    textSize(50);
    text("Click to Restart", 450,200);
    noLoop();                                       //Stop looping at the end of the draw function
    lost=true;
    textSize(13);
  }
}
void mousePressed()                                 //Runs whenever the mouse is pressed
{
  if (dist(mouseX, mouseY, xpos, ypos)<=rad)        //Did we hit the target?
  {
    score=score+speed;                              //Increase the speed
    speed=speed+1;                                  //Increase the Score
  }
  else                                              //We missed
  {
    if (speed<1)                                    //If speed is greater than 1 decrease the speed
    {
    speed=speed-1;
    }
    lives=lives-1;                                  //Take away one life
  }
  if (lost==true)                                   //If we lost the game, reset now and start over
  {
    speed=1;                                        //Reset all variables to initial conditions
    lives=5;
    score=0;
    xpos=width/2;
    xdirection=1;
    lost=false;
    loop();                                         //Begin looping draw function again
  }
}

As shown above, i'm able to get a song to play in the background using the minim library, i have a spare 'ding' sound effect, which i would love to add to the click of my mouse when i click the ball, the only problem is i'm unsure on how to do so. So basically, everytime the ball is clicked it produces a 'ding' sound. Thankyou to everyone who can take the time to help me!