For the Metallica S&M concert, there are two versions available on Amazon.com. One is called "Metallica - S & M with the San Fransisco Symphony (1999)" and the other is called "S&M Smartpack (2004)." What is the difference between these two? I have provided the links below: 1999 version: Amazon.com: Metallica - S & M with the San Francisco Symphony: James Hetfield, Lars Ulrich, Kirk Hammett, Jason Newsted, Michael Kamen, David Gaudry, Artie Storch, Justin Crew, Anthony Striplen, Stephen Paulson, Catherine Payne, Enrique Bocedi, Joshu 2004 version: Amazon.com: S&M (Smartpak): Metallica, Wayne Isham: Movies & TV By the way, the same is true for their Cunning Stunts concert DVD. There is 1998 version and a 2004 "smartpack" version. What is the difference between the "originals" and the smartpack versions?