control buttons not working

hi,
within this example (_buttons) the script (for all roll over effects and show/
hide movieclip) somehow seems to be in conflict with the control buttons of
the movie player...they are not clickable like this...
the example without buttons, play/stop 'on press' works just fine, but with is still a problem.
Probably I have to take care of the right priority here, but don't know how...
any idea, hint?
Thanks again, best,
flo


p.s. please load another movie into the display (components inspector), as mine
was to big to attach here