How can I add extra parameters after a permalink, specifically if I'm using a custom post type?
For example, let's say
http://mysite/album/record-name was the permalink. How can I make
http://mysite/album/record-name/related not turn up a 404 or redirect?
WordPress doesn't seem to call up the post template if the post doesn't exist... so I'm at a bit of a loss how to do this.