What is worse than a slide show at a friend’s place? Two slideshows! We know all about that, and almost everyone of a certain age (read: not digital age) has probably had to deal with those slide show nights. And yet, some slideshows were better than others. Some people added sound effects to the slideshow. Sounds like howling wind, rain on a tent or chirping birds. Back in the day, you could buy those sound effects on LPs for quite a bit of money. They were usually more expensive than a standard music album from, say, the Rolling Stones.