Feral Heart

Hey! so i haven't played this game in forever but i wanted to launch it again for old times sake... but its telling me i need to install the latest patch, which i have done. when i try to open it, it says "The code execution cannot proceed because irrklang.dll was not found. reinstalling the program may fix this problem." and i reinstalled a bunch of times already! ive got no clue how to fix it and could really use some help