Web Audio API
The Web Audio API aims to give the JavaScript developer basically the same tool he is used to having when writing a native application. It replicates the capabilities of OpenAL, a very widely used API for game development. Furthermore it's a standard API. Sadly, for the moment, it's only implemented on Webkit-based browsers including the mobile version in iOS 6.
Before work on this standard began, Mozilla added a similar API to Firefox called Audio Data and is currently working on migrating to the Web Audio API. It should probably be available in a stable version before the end of 2013. As for Internet Explorer, nothing has been announced yet. If you want to use the Web Audio API in Firefox, you can now use the audionode.js
library (https://github.com/corbanbrook/audionode.js), but it's incomplete and hasn't been updated in years. However, if you stick to simple usage, it will probably do the trick!
Instead of simply providing a way to play a sound, this API provides a full stack...