Where can I get a replacement music box?

Tricia

I'm currently 8 months pregnant and was hoping to use my son's Graco pack n play Elephant print with the bassinet from 3 years ago for my unborn son. I unpacked everything from storage to find out the one thing I forgot to take the batteries out of ended up exploding and now doesn't work. I have looked everywhere online and cant find it. I have to wait for business hours to contact Graco and I am determined to figure out another way.