How to retreive / get / download indirectly loading audio from web page?

I know that media can be loaded into web page, without using conventional HTML tags, using JavaScript and (or) Flash. There are lot of audio and video player plugins are available, like JW Player. Usually, these media can be caught and traced, using net console of Firebug. I use Firebug with Firefox, for the past years. Recently, I have came through a web page, in which, audio cant be caught using Firebug. Here is the page. Can somebody explain me how to catch audio from that page / pages like these?