A new set of 4 spooky and creepy sounds is available at the PIC sound multiplayer page and you can listen to them here.
A minor firmware update is also available. This update ignores continuous clicks on the play buttons while the sound is playing so that the player can be controlled by external circuits like PIR sensors or remote controller receivers. 
 

PIC sound multiplayer is a circuit useful to play short sounds in RC cars, trains or toys. Click here to go to the project page.