Running the game on my XP test machine, the movie section plays correctly.
On installing the K-lite 3.9 codec pack, the game then freezes when replaying the movie - as reported.
Will do a bit more testing to see what can be done - perhaps a setting change fix may be possible - rather than a new build and patch required.
I'm guessing the K-lite pack is a fairly popular download?
Interestingly, Steam lists the K-lite codec pack as being one of the 'Programs Which Interfere with Steam'http://supportwiki.steampowered.com/wik ... with_Steam