Wildcard,
If you're using PWS, they appear to have the server side files as the 1.4 update. I kept trying and could hear everything except gunshots; so, download the update direct from the first post, bin the current PWS version, and it works perfectly. If you're not using PWS then not sure what's up, sorry! You're in for a treat once you get it working though, brilliant mod and outstanding work from LJ and big thanks for sharing your hard work.
Regards