Webaudio.js
web audio library for games
Audio.js
A cross-browser javascript wrapper for the html5 audio tag
Flac.js
FLAC decoder in JavaScript
Amplitudejs
A Javascript library that allows you to control the design of your media controls in your webpage -- not the browser. No dependencies (jQuery not required)
Audio5js
The HTML5 Audio Compatibility Layer
Sound Manager 2
A JavaScript Sound API supporting MP3, MPEG4 and HTML5 audio + (experimental) RTMP, providing reliable cross-browser/platform audio control in as little as 10 KB. BSD licensed.
Howler.js
Javascript audio library for the modern web.
Teoria
A JavaScript music theory framework.
Wad
Web Audio DAW. Use the HTML5 Web Audio API for dynamic sound synthesis. It's like jQuery for your ears.
Buzz
Buzz is a small but powerful Javascript library that allows you to easily take advantage of the new HTML5 audio element. It tries to degrade gracefully on non-modern browsers.
Pedalboard.js
Open source JavaScript framework for developing audio effects for guitars using the Web Audio API.