need to protect files with modrewrite (mod rewrite and flash .swf)

Hey

I have a following .htaccess file

RewriteEngine On
RewriteCond %{HTTP_REFERER} !^.*/ilias3/.*$ [NC]
RewriteRule (php|html|swf) - [F]

and it does not work. When I launch my presentation in flash it loads
the first movie, but failts to allow that .swf to load other swfs into
it. I checked the referer log and it indicated that the referer is
/ilias3/data/iliasmain/lm_data/lm_126/mymovie_1.swf which means that
it should get validated just fine.

Any help appreciated

R>