Making a scream play when player enters a room?

[Austums]

Okey dokey, I tried adding a FadeIn to my script, but it gave me an error. Am I supposed to edit this at all, or just leave it as is?

void FadeIn(float afTime);


I was guessing that since it's void it doesn't go in onStart or anything, it just goes by itself. Also, why is this "void"? I thought this would be triggered by a script area

void PlayMusic(string& asMusicFile, bool abLoop, float afVolume, float afFadeTime, int alPrio, bool abResume);

and what exactly am I supposed to erase from that script and add my own? Do I keep af(for afVolume) and replace Volume with a number, or do I erase the whole thing?