[P/O W. 'Moggy' Cattermole]

Do you have the sound mod, or unified installer?

If not, get the unified installer, it covers all your basics; (The link is inoperative)

then patch it: (The link is inoperative)

and then, try re-installing that campaign (if it isn't working correctly) and also have a look at some of the other available mods to see what's available. Not everything is included in the UI, but the majority of stuff is. If you need any help, please feel free to ask.