FLV does not load in browser

I have flash movie that loads flv’s from a server, in flash IDE and even when you load the swf from the server this all works super and is not a problem. However when the flash is embedded in a hmtl page it does not load the video and I think it doesnt even load the xml but I think its the same problem.

I think its something to do with the security but Im not sure. Its probably something very simple but it is very annoying.

Does any one know how to fix this?

Many thanks