Fart noises for the treehouse doorbell: An inspiration

I've been on a DIY kick recently and today in the car I asked Ty, if you could have a button on your treehouse that you could press and it would do something (light a light, make a noise, move something, etc.), what should it do?

She thought about it for a moment then said she wanted a doorbell for her treehouse. A moment or two went by and she began to giggle, then announced that she wanted a doorbell that made "fart noises."

Looking around at the possibilities, if I'm not mistaken, I think I've figured out how to pull that off without breaking the bank. Looks like this little module and a 9 volt battery will do the trick for $12. Very cool.

UPDATE: This worked like a charm! Even better, we put it in a little case where the young'un could remove it and re-record whatever she wanted, and she changes out the message every couple of weeks. My only beef: I wish the "record" button were on the little green board and the "play" button was the one attached externally with wire (on the right in the photo) so you could better place the button you hit to make noises wherever you want. But we figured out how to make it work. It's been a big hit. Really cool module for the price.