HI THANKS FOR GETTING MY TRACK
PUT THE WAV SOUND INTO YOUR SOUND DIRECTORY OF MTM
if you don't already have a sound directory you'll have to make one
by left clicking and selecting new folder
name it sound and then drop the scream3.wav into it
you have to do this OR ELSE YOU WON'T BE ABLE TO HEAR THAT SOUND 
in the game
HAVE FUN! 