Sound Problem

I only recently got my game and the sound files were messed up. I followed the directions to fix them but I am still missing a number of sound files, among them the announcements for new dinosaurs added to the park and a number of dinosaur roars. Can someone give me a copy of a complete sound and music file which is still good so I can fix this little issue? Or at least direct me to a place where I can find a download for these files?