This is the source code for the Web Audio Playground application.

To install the application locally, download a copy of the Python App Engine SDK for your operating system, install it, point it at a check-out of this repo and view the application on a local port using the latest version of Google Chrome.

Alternately, you can simply host the directory structure on a local web server, and load index.html.
(The app cannot be run from file:// as XMLHTTPRequest doesn't work.)