Video Buffer Control

[font=Arial]Hello, I posted this in the mx 2004 forum but no joy… im thinking it may be a script i would need?

Basically I have an flv file which I have linked to using mediaPlayback, I have checked the ‘automatically play’ button and uploaded to my web space.
All works great apart from the video starts playing back a bit to early and catches up with the download before it hits the end.
Is there any way I can control the auto playback to only start once say 40% off the movie is buffered? Is it possible to control this with actionscript?

Any help greatly appreciated