Loading Stream/Buffer Help

Hi, can anybody help me with building a loading stream/buffer??? I need a movie to start playing before it has finished loading. I need this to happen because the size of the swf is quite large and loading takes a while.

In other words I need a movie to start playing before the percentage has reached 100%. So the movie starts playing at say 20%, and whilst the movie is being played the rest of it is still loading. A good example is http://www.loantoolbox.com/flash/exclusive.html

Thanks in advance. :hr: