I don't know what you think you'll find inside Postal, But I would assume no great secrets will be revealed.
Cases below. Pick and order. Then you get to program. That's where the magic is.

http://www.2t.com/terminals.htm

It Don't mean a thing if it aint got that swing.

Cool, Free, Johnny Smith courtesy of NPR..HERE
http://www.npr.org/ramfiles/asc/asc25.smith.asx