BDMutator_v16ZombieSounds.pk3 will add the improved zombie voices removed in the version 16 by popular demand. To use this: Select Brutal Doom's main file, then hold Ctrl, and select this mutator. Now click and hold your left mouse button over Brutal Doom, and drag it over your engine executable, so you can load both files, and by doing in this order, Brutal Doom will be loaded first so the patch can work.