If you go into the settings menu, is the volume turned up?

I'd suggest uninstalling and then reinstalling the game (and modules). Something might not have gone smoothly with the update. You could also archive downloads (if you can afford the space) through Stardock Central under the right-click context menu, so that you don't need to redownload if you should need to reinstall. Press Ctrl+R to restore from archive once you've archived an application.

I personally haven't had any reports of this issue yet.

-Mike
[Stardock Support]