Anyone use this and have any idea how to fix it?

When I try to load the demo screen I get an error:

WARNING: couldn't load sound: sound/misc/kcaction.wav
WARNING: could not find sound/misc/kcaction.wav - using default

Could the sound error actually stop it from running? Any of you fancy pak editor folks think of a quick fix? Should I just use something different for demos?

You can get it here:

http://www.filedropper.com/zhypernewbiedemomenu