FLV's that are external work fine locally but not uploaded online?

HI I have a site which im using the FLVPlayback component to play my flv videos. Everything works great locally but not when uploaded?
Ive definitally uploaded all the correct files in the correct folders

basically any flvs which are in my main.swf work great locally and uploaded!
…But any flvs which are in seperate external swfs then these are loaded into my main.swf work fine locally but do not play at all when uploaded?

So i know flvs work on my server as the ones in my main.swf are fine, does anyone know of this problem? ive been working on this site for ages and it has to be online asap.

I have a crossdomain.xml file uploaded if that is anything to do with it?
Any ideas would be great, THANKS
im working in AS2