Learn some HTML, enough to know where object (that's flash tags) are hidden. Then be able to understand their attributes. The name of the file (and where its hosted) is in the src attribute. To make things easier you can always get an addon like Firebug for Firefox that will enable you to right click (you can't do it inside flash content, but do it as close as possible) and inspect the source surrounding the SWF. Then find the SWF and all the info you need should be within the object tag.