sound trouble

okay I got Alien Crossfire from http://smac.2be.cc/tools.html.
But I
have a problem with the sound. I copied voice files from the same site
but I didn't get any sound at all except for the button clicks. I then
copied the fx, voice files from my install of Alpha Centauri and the
terran.exe over to the SMACX directory I get sound up until I got a
new game started up. Then just button clicks again. Also I can't
specify erosion and native life abundance like I could with my old
install. I copied back the voice and fx files from the SMACX to my old
SMAC directory and everything seems fine. Any one know how I can get
sound and voice to work again?