Need basic 'how to' info

I just installed Flashgot and a download manager as Seamonkey add-ons.

When I active Tools -> Flashgot, I get the video download that I want, but I also get dozens of small files that have no extensions.

How I can I specify only the file that I want?

I have googled and found basic information about how to use Flashgot, but I am having difficulty parsing some of the English in those instructions.

Thanks.