You probably reached this page by using your TAB key to navigate through the previous page, and then you pushed your ENTER key to activate a link. Links to large files are obfuscated on this web site. The desired destination is not activated until you pass over the link with your mouse.
Only a few links on this site are obfuscated (just links to large files). The rest of the links work with the mouse or via TAB/ENTER navigation.
Users who can't use a mouse due to physical limitations can send email to user 'Gary' at the Gocek dot org domain and I'll help you any way I can.
This web site gets several thousand unique visitors per month, so a sudden increase in the popularity of a large file could blow our hosting service's bandwidth quota. Links to large files are obfuscated to keep those files from being directly indexed by search engines.