let Afplay = require('afplay');

// Instantiate a new player
let player = new Afplay;

// Play a sound, handle result within a Promise
player.play('/tmp/my-file.mp3')
  .then(() => {
    console.log('Audio done playing');
  })
  .catch(error => {
    console.log('Error playing file');
  });

player.play('/tmp/my-file.mp3', {volume: 100, time: 15})
  .then(() => {
    console.log('Loud, short duration audio done playing');
  })
  .catch(error => {
  	console.log('Error playing file');
  });