I'm specifically trying to mirror .flam3 files from the electric sheep project. 
My goal is to only archive the .flam3 files, no html, no images, just the
.flam3 files.

And example of a page on this site that contains a link to the .flam3 file is
on this page, at the top, labeled "file"

<http://v2d7c.sheepserver.net/cgi/dead.cgi?id=7&detail=genome>

the root of the site would be this: 
<http://v2d7c.sheepserver.net/cgi/status.cgi>

I can't seem to figure out how to just mirror the .flam3 files.  All data is
free and downloadable through the creative commons license.  I tried setting
-*.jpg, etc. for every common filetype, and +*.flam3 but it seems to want to
generate thousands of html pages even though there doesnt seem to be any
.htm/.html links on the site.
Any help would be appreciated.  Thank you!