function preload() {

 soundFormats('mp3');

  mySound = new p5.SoundFile('https://interactive-examples.mdn.mozilla.net/media/examples/t-rex-roar.mp3')

}

​

​

function setup() {

  let cnv = createCanvas(100, 100);

  cnv.mousePressed(canvasPressed);

  background(220);

  text('tap here to play', 10, 20);

}

​

function canvasPressed() {

  // playing a sound file on a user gesture

  // is equivalent to `userStartAudio()`

  mySound.play();

}