How to play a minim track at a specific time using millis()

I am attempting to write a code which sets of a beep at controlled but random intervals using millis and minim. I can't understand why the beeps are not playing using the code below. Can anyone help?

I am very new to processing!

Thank you,

Amy

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pre lang="javascript">

 import ddf.minim.*;
    import ddf.minim.AudioPlayer;

    import oscP5.*;
    import netP5.*;

    OscP5 oscP5;
    NetAddress otherSketch;

    Minim minim;
    AudioPlayer beep;

    PFont f;
    int [] beeps = new int [5];
    int ms;
    int start;
    int totalBeeps;
    boolean pressEnter;

    void setup(){
      size (512,200,P3D);
      f= createFont ("Georgia",16);

      boolean pressEnter = false;
      totalBeeps = 0;
      oscP5 = new OscP5(this,8001); /* start oscP5, listening for incoming messages at port 12000 */
      otherSketch = new NetAddress("127.0.0.1",8000);

    beeps [0] = int(random(10,60))*1000;//these numbers aren't right but give an earlier beep!
    beeps [1] = int(random(1260,1739))*1000;
    beeps [2] = int(random(1860,2339))*1000;
    beeps [3] = int(random(2460,2939))*1000;
    beeps [4] = int(random(3060,3539))*1000;

    printArray (beeps);

    minim = new Minim(this);
    beep = minim.loadFile ("ping.wav");

    }

    void keyPressed() { //boolean controlling the start screen.
      if (keyCode == ENTER) {
        start = millis();
        pressEnter = true;
      }
    }

    void draw (){

    background (255);
    textFont (f,16);
    fill (0);

    int ms = millis()-start;

    println(ms);

      if (pressEnter)//this boolean controls the start screen and initiates the timer -resetting millis to 0 when ENTER is pressed.
      {
        text("The experiment has begun and these are the random beep times:",10,40);
        text(beeps[0],10,70);
        text("milliseconds",80,70);
        text(beeps[1],10,90);
        text("milliseconds",80,90);
        text(beeps[2],10,110);
        text("milliseconds",80,110);
        text(beeps[3],10,130);
        text("milliseconds",80,130);
        text(beeps[4],10,150);
        text("milliseconds",80,150);

        OscMessage myMessage = new OscMessage("/time in milliseconds");//this isn't the correct place but a test
        myMessage.add(ms);
        oscP5.send(myMessage, otherSketch);
      }else {
        text("Press Enter to begin",10,100);
      }

    for (int i=0;i<beeps.length;i++){ //this for loop should initiate the beeps in the array to sound if their value matches int ms (which is millis - millis when ENTER pressed)
    if (beeps[i] == ms)
         {
      beep.play();
      totalBeeps =totalBeeps+1;
        }
      else if ( beep.position() == beep.length() )
      {
        beep.rewind();
       }
      }
    }