Millisecond Forums

Dear All,

I would be very grateful for advice on how to implement a sound in a preset interval on top of another task. 

I would like to modify the Point Subtraction Aggression Paradigm ( http://www.millisecond.com/download/library/psap/ ).
I would like to play the sound of a bell every 2 or 3 minutes during the task as a reminder of previously explained instructions. 

Does anyone know how to implement the sound on top of the PSAP task? 

Any help would be much appreciated.

Best,
Kim Lien