Aurora.js

* aurora.js v0.4.2
* mp3.js v0.1.0
* flac.js v0.2.0
Use WebDAV to access music files - this supports HTTP range requests

* chunk size of 512 KB
* use injected Audio object in player controller
Getting aurora.js to work with music app

* this was developed by Pellaeon Lin and Gigen Chang
fix seeking