F4Vs will not play in SWF unless filename extension is changed to .flv

[Fleshpope]

Using classes-
import fl.video.FLVPlayback;
import fl.video.VideoEvent;

I set the source of a player instance to "chapter1.f4v" connecting to a local
file of the same name. Doesn't play. Doesn't error.
But, if I rename it in the script, and rename the file to chapter.flv, it
plays. Kooky.

I don't like workarounds unless they're absolutely necessary. Most of the time
when I end up with a workaround it because I'm not doing something the most
effective way.