I'm going to have to replace the lighting.  I would like to find a speaker and take apart the speaker block and see if I can rig something up so you could push the button and here it out a speaker.
Anyone out there tech savy have any ideas?  There is also a switch for tray pick up...
Cool item, what's the output of the mic, just a standard audio output?  You'll need an amplified speaker to get sound out, give this one a shot, cheap for experimenting: 
https://www.radioshack.com/products/radioshack-mini-audio-amplifier?variant=5717614213