Hi thanks for your suggestion! :)
So logistics-wise that would be a bit too hard to setup. What you can do at the moment is: when recording to an mp3 (on the desktop version) you can click the room objects, this will add that sound to mp3 you're recording. It's not quite the same as what you suggested but it would be hard to set something else up.
Also if you're looking to see more of the game, please consider signing up as a playtester: here and when I next update that you should be able to try the new levels. (That will probably be in a couple of months)