XeNTaX

Well, I'm gone so far as to aid in the discovery that the basic Castle Crashers graphics files are simply 'disguised' SWF files. The one thing I cannot figure out how to do however, is 'patch' them with their newest updated graphics. In the link below you will find a rar file containing two folders. One titled 'Original' which contains four files (2 ".pak" 2 ".diff") and one titled 'SWF' where I have converted the .pak files into their respective SWF version. It also contains the same two ".diff" files that I hope can be used to update the swf files or the .pak files. In fact I know they can, as it's how the game patches in question. I just am not sure how it does it. Can someone get these 'two' files together so I can extract the resources I need?
http://www.sendspace.com/file/2u0qjy

Perhaps you can use RABCDasm?

Well, I've never heard of the program but apparently it'd be useful for other things. I've tried several methods using it but no such luck. Thank you for your help though.