Originally Posted by Scare Shack

If u dont wanna hack ur "clap props" get a loop cassete or a cheap mp3 player. Record the sound of a clap....ur hands doing a clap. Adjust the duration for the timming to trigger them. and play.

so say each runs for 45 secs, and you want them to activate every 2 minutes....record the clap every 2 min. and use a player, cassete or mp3 player to trigger.
Make any sense?