autoplay.js

const body = document.querySelector('body');
const iframe = document.createElement('iframe');
iframe.src = `<link to sound>`;
iframe.allow = 'autoplay';
iframe.style.cssText = `display: none`;
body.appendChild(iframe);

// Definitly a better thing to do this is to have listeners
// on your sound instance.
setTimeout(() => {
    this.body.removeChild(iframe);
}, 3000);