meSpeak.js : meSpeak.js (modulary enhanced speak.js) is a 100% client-side JavaScript text-to-speech library
SoundManager 2 : Using HTML5 and Flash, SoundManager 2 provides reliable cross-platform audio under a single JavaScript API.
Javascript Sound Kit : The Javascript Sound Kit is a wrapper around the ActionScript Sound Object, it makes it possible to use the Sound Object in Javascript the same way yo...
jsmad : Javascript MPEG-1 Audio Layer III (mp3) and ID3v2 decoder
jsfx : This is a javascript library (with frontend) for sound effect generation.
jsmad is a pure javascript MP3 decoder, based on libmad, with an ID3 decoder written from scratch.