A few years back I made a couple animatronic dolls for the local “Spooky walk”, which is essentially a haunted house but built in the town forest. Here’s a clip I recently unearthed of my improved “Corky” doll from the 1980s. To bring this little guy to life, I created an FLAC sound file which contained the new audio on one channel and motion audio on the other. Because the spooky walk takes place in the woods, I drove the audio using a cassette adapter and a portable audio player.