SWF won't play the FLV

I’ll try to be brief and straight forward with this problem.
My SWF files aren’t running the FLV files. They run well when on the location I created them, but as soon as I move them to another location or upload them to a web server, they simply don’t run. I’ve made the FLV file’s path relative already but it acts as if it is still absolute. I’ve also tried changing the flv location from a below location to the same location of the swf and still nothing.
Anyone who knows how to do this properly, could you please give me some tips?

Thank you for your attention.