I have recently imported a sound through minim. However, I would like to know how to play this sound twice instead of just once, and back to back??? Can anyone help??

this is what i have so far...


Bubble[] bubbles;
 import ddf.minim.*;
  Minim minim;
  AudioPlayer player;
 
void setup(){
    minim = new Minim(this);
    player = minim.loadFile("Bubbles.mp3");
    player.loop();
    println(player.getControls());
  background(108,16,229);
  frameRate(20);
  size(500, 500);
  colorMode(RGB, 300, 100, 50);
  smooth();
  bubbles = new Bubble[1000];
  for(int i = 0; i < 500; i++){
    bubbles[i] = new Bubble(random(10, 500),random(50, 500),random(5,50));
  

  }
}
 
void draw(){
  background(108,16,229);
  for(int i=0; i<500;i++){
    bubbles[i].display();
    bubbles[i].move();
  }
}
 
class Bubble {
  float mad, ison, diameter, bai, ley, jump, swim;
  
  Bubble(float m, float b, float a){
    mad= m;
    ison= b;
    diameter = a;
    jump= .6;
    swim= -.99;
    bai= random(0,3);
    ley= random(0,3);
  }
 
  void display(){
    fill(119, 64, 89, random(50,100));
    ellipse(mad, ison, diameter, diameter);
  }
 
  void move(){
    ley +=jump;
    mad += bai;
    ison += ley;
    if(mad> width){
      mad= width;
      bai= -bai;
    }
    if(mad< 0){
      mad= 0;
      bai= -bai;
    }
    if(ison> height){
      ison= height;
      ley *= swim;
      bai *=swim;
    }
    if(ison< 0){
      ison= 0;
      ley *= swim;
    }
  }
}

The error is showing up at the "loadFile" line and the name of the error is NullPointer Exception. I do not know what is wrong with my code or if the problem has to do with where I saved the file. please help!!!