Loadmovie problem in a listbox

hi there

again bouncing on a problem,
i used listboxes before, for loading texts, urls, movies all good there.
i tried the common codes for that. but it won’t work on a listbox i found on the net.

but in this one, i duno, i didn’t write it myself but i like to understand it how it’s done, it’s quite a cool technique using the mctween as.

can anyone post a suggestion? or a guidance so i might understand the underlying code for this one.

question: /what code do i need to write to load an external swf when a item is being pressed. in the output, i see it has been traced but i can’t seem to get it to load on stage. (in a holder or not)

i’ve uploaded a fla+the needed a.s.

thnx in advance