soundtrack.js

Make handling the soundtracks to your HTML5/JS games somewhat easier. ES6/JS2015 with CommonJS bindings.

TL;DR

  var soundtrack = require('soundtrack').soundtrack,
      bg_track   = new soundtrack([ 'song1', 'song2', 'song3' ]);

  bg_track.play('song2');

What's the point?

This library is primarily intended to make soundtracks out of loopable MP3s.

Handling seamless looping music in JavaScript is surprisingly hard, because of the timing situation - neither the HTML5 Audio object nor WebAudio AudioContext's events fire fast enough to handle seamless looping (the spec allows 15ms to 250ms.) HTML5 setInterval, however, has been set to a floor of 4ms, which is satisfactory.

This library wraps up the ho-hum, teaches songs to know whether they loop, provides start, end, and loop points for songs, offers high resolution (4-6ms in practice, though undefined) callbacks for hitting music timings, and generally just makes it easier to deal with high resolution audio timing.

Polemic :neckbeard:

soundtrack.js is MIT licensed, because viral licenses and newspeak language modification are evil.
Free is only free when it's free for everyone.