I'm assuming you are using the FLVPlayback component... if so, you'd set the playback params down in the properties panel (auto, etc).
I can play the video on a web page of mine by using this as the address:
http://www.nicnackproductions.com/ni...bu/peekabu.mp4
I'm using a JW Player and an xml playlist.... works just fine with your video.
So you must not have the correct path to the video set in the player. Again, double check the path in the properties panel. Path should be correct for the file structure on the server, not the path as on your local machine.
Video Man