It's resolved, I'm using the JCE editor Plugin (5* BTW), which strips out some of the tags by default so when you embed your video it's not in the correct format, it seems to think the tags are ANSII codes or something similar.
Just use the insert HTML button on your editor and insert the {swf}flash_file{/swf} link like that. Then it should work.
PS - Mine doesn't display anything yet, but I'm working on it.