Welcome the my HTML 5 Audio Editor. You can edit WAVE, OGG and MP3 files and export them as WAVE. This application uses no extra plugins like Flash or Silverlight, its written in JavaScript and HTML.
I used some of the implementations given the design draft of the HTML5 API. Therefore you need the latest Chrome or Safari build. Firefox is not supported, because there is no implementation for the Web Audio API at the moment. If you have Internet Explorer, ... don't ask.
If it is not working for you, try the Google Chrome beta
Your browser support is: Unkown
Have fun, this is a prototype and my first web project.