The only reason for encoding audio in base64 is to reduce the number of requests which in turn reduces the loading time. It's an alternative to audio sprites. Useful when you have a lot of audio files to load.
Hey Adi the link to API Docs seems broken.
Working link: http://www.waudjs.com/api/
It's gone beyond getting angry, now I'm just sad for the state of this whole schlamassel.