Werewolves, if you're not aware, is a group game played with hidden roles. It's also best played with a fairly large group -- 10, 15 or more.
During various stages of the night, people need to do certain things. However, both noise and movement can give certain things away. (Reaching across a table, or walking across a room, to flip a card, etc.)
One solution we've come up with is to play very loud music during those times. This helps to mask a lot of the secret play.
Unless, however, you're in a very large space, too, you can often feel the person near you move regardless of how loud the music is.
So, does anyone have any good ideas to such issues with this game? I realize it's also up to the players to "play fair" -- otherwise there's no point. But you also don't want to be accidentally handed the answer.