Another idea is to use an iPod or something small rather than playing the sounds over the PC. But that might turn out to be a problem for the timing, unless you just have the MP3 be like 2 hours of nothing and then noises.
Another thing to fuck with his mind, even though it's really subtle, would be to change around the items he uses on a daily bases, that usually are at the same spot.
XI Wiki


Thanks.

