howler.dart is an audio library for the modern web. It defaults to Web Audio API and falls back to HTML5 Audio. This makes working with audio in Dart easy and reliable across all platforms.

Additional information, live demos and a user showcase are available at


A simple usage example:

import 'package:howler/howler.dart';

main() {

    var howl = new Howl(
        src: ['audio/track.mp3','audio/track.wav'], // source in MP3 and WAV fallback
        loop: true,
        volume: 0.60 // Play with 60% of original volume.
    ) ;; // Play sound.
    howl.fade(0.0, 0.60, 10000) ; // Make a fade, from volume 0% to 60% in 10s


Features and bugs

Please file feature requests and bugs at the issue tracker.


Graciliano M. Passos: gmpassos@GitHub.


MIT license.

Original project in JavaScript

This library was originally written in JavaScript by James Simpson. It was ported to Dart 2 code by Graciliano M. Passos.

You can find the original project at GitHub(howler.js).

Project site: