When playing a good horror board game or RPG (I have only mentioned a few that are available, and I'm saving the best for last), having a haunting soundtrack in the background does a lot to set up the mood. I like using music when I run RPGs. I did it a lot when I ran Mage: The Ascension, and I planned on implementing it in a Rippers campaign I was starting (It fell to the wayside after two sessions because everyone wants to run one game or another in my group). Last October, I came across these cds that I found to be perfect for background music for the game.
website and listen to a couple tracks.
As an added bonus, I decided I wanted to post a Sonata Arctica video. The video does fit the horror theme and the song kicks ass. So enjoy some "Wolf and Raven."