ok, here it is, no prob, first load your menu stuff images sounds, then load your video. then loop your video before the loop, then in the loop do your regular code. if you use sprites the sprites will go over the video.
color backdrop rgb(0,0,0)
load image "files\menu\tital.png",100000
load image "files\menu\ENTERNAME.png",100003
load music "files\menu\HauntingMusic.mp3",1
videofilename$="files\menu\menu.wmv"
load animation videofilename$,1
set image colorkey 0,0,0
LOOP ANIMATION 1
sync
do
SPRITE 3, 650,150, 100002
SPRITE 4,mousex(),mousey(), 100003
SPRITE 5,mousex(),mousey(), 100004
color backdrop rgb(0,0,0)
if mouseclick()=1 then SPRITE 4,mousex(),mousey(), 100003
if mouseclick()=1 and SPRITE COLLISION(4,3)
STOP ANIMATION 1:CLS:SYNC:DELETE ANIMATION 1:STOP MUSIC 1:gosub levelone
endif
sync
loop