[cd34]

RewriteEngine On
RewriteCond %{HTTP_REFERER} !^$
RewriteCond %{HTTP_REFERER} !^http://www.quantumporn.com/.*$ [NC]
RewriteCond %{HTTP_REFERER} !^http://quantumporn.com/.*$ [NC]
RewriteCond %{HTTP_REFERER} !^http://subdomain.quantumporn.com/.*$ [NC]
RewriteCond %{HTTP_REFERER} !^http://www.we-r-sex.com/.*$ [NC]
RewriteCond %{HTTP_REFERER} !^http://we-r-sex.com/.*$ [NC]
RewriteCond %{HTTP_REFERER} !^http://subdomain.we-r-sex.com/.*$ [NC]
RewriteCond %{HTTP_REFERER} !^http://www.planetofporn.net/.*$ [NC]
RewriteCond %{HTTP_REFERER} !^http://planetofporn.net/.*$ [NC]
RewriteCond %{HTTP_REFERER} !^http://subdomain.planetofporn.net/.*$ [NC]
RewriteCond %{HTTP_REFERER} !^http://www.lustylemmy.com/.*$ [NC]
RewriteCond %{HTTP_REFERER} !^http://lustylemmy.com/.*$ [NC]
RewriteCond %{HTTP_REFERER} !^http://subdomain.lustylemmy.com/.*$ [NC]
RewriteCond %{HTTP_REFERER} !^http://www.whothefuckislemmy.com/.*$ [NC]
RewriteCond %{HTTP_REFERER} !^http://whothefuckislemmy.com/.*$ [NC]
RewriteCond %{HTTP_REFERER} !^http://subdomain.whothefuckislemmy.com/.*$ [NC]
RewriteCond %{HTTP_REFERER} !^http://www.desktopwanker.com/.*$ [NC]
RewriteCond %{HTTP_REFERER} !^http://desktopwanker.com/.*$ [NC]
RewriteCond %{HTTP_REFERER} !^http://subdomain.desktopwanker.com/.*$ [NC]
RewriteCond %{HTTP_REFERER} !^http://www.yahoo.com/.*$ [NC]
RewriteCond %{HTTP_REFERER} !^http://yahoo.com/.*$ [NC]
RewriteCond %{HTTP_REFERER} !^http://www.google.com/.*$ [NC]
RewriteCond %{HTTP_REFERER} !^http://google.com/.*$ [NC]
RewriteCond %{REMOTE_ADDR} !^68\.169\.210\.217$
RewriteRule .*\.(jpg|jpeg|gif|png|bmp|mp3|mpg|mov)$ - [F,NC]

That should work.