vordmeister - 9:11 am on Feb 17, 2011 (gmt 0)
I am a bit out of date with software - FlashMX is 2002ish. Turns out it does not support .flv files. I was confused by .fla which are the project files.
Thanks for the explanation - it makes a lot of sense. Looks like the answer is to upgrade to a version that supports .flv and from there is sounds easy.