Youtube videos turned into hyperlinked pictures

Viper and company,

I changed the theme on my wordpress blog (cinemanarcs.com) and broke the videos I had linked to. Remembering what I did to fix it last time, I went to the header.php file and added <?php wp_head(); ?> in front of the </head> tag. For whatever reason, it’s still not functional.

Any advice you could give me would be great.

http://wordpress.org/extend/plugins/vipers-video-quicktags/