> > AT the bottom of the download page is a link to
> the source.  You could always build your own.
> 
> I am not a developer, I would only be sure about the
> program downloaded from the web. Just for my
> security that the program is the same (not corrupt)
> of yours. 
I am not a developer either, just a user like yourself.
If the downloaded zip is the same size as reported on the site and the zip
doesn't report any uncompression problems then I wouldn't worry about it.