Hi Netanel1111
When you are editing the Button properties, just to the right
of where you type the URL is a downward pointing arrow. Click this
and you may configure the link to open in a new window. The option
is labeled "New". Click it again after selecting New and you should
be able to DE-Select the option labeled "Continue playing movie".
This will keep the movie from playing when your user clicks the
button.
Hopefully this helps... Rick