Is there any way to easily hack LED musical strobe lights?

OK, I bought a bag box of Halloween stuff at a yard sale yesterday and there's two sets of battery operated musical strobe lights that originally came from Dollar General. While they're currently entertaining my 4 month old, I was wondering if there's a relatively simple way to hack these so that they will flash along with other sound effects.

I will try to get a picture of these posted if that would help. Thanks.