I've not used the packaged software only because the software I have is more streamline and advanced for my purposes. I can say that the K-5's videos should be fine - they wouldn't be corrupt, only giving your copy of VLC some trouble. Then again I'm using Macs, and on them I've had no issues with VLC. I don't like WMP personally.
Perhaps you can look for alternative free AVI players for your computers and try them out - or just use the bundled software you already have.
Last edited by Ash; 05-23-2011 at 04:35 PM.