movie loop question

hey,

i've recently taken on a web project after having been out of graphics for many years and unfortunately i've forgotten alot.

i created a simple slideshow type movie with fade transitions, but at the end when it loops back to the beginning, there's a visual gap... sort of a hiccup... a blank spot before replaying...

how can i get the thing to loop smoothly and uninterrupted?
thanks in advance!

(x-posted)