very nice box you have there - I'm trying to get something similar whit this robot voice kit
. if you are interested in this small kit i can post the PCB and part values.
there is also the possibility to make a Vocaphonie - but the SR2206 is hard to find ... maybe i should get one of those megaphone -thingies ..
do you have more pics and details of your work ... ?
I'm interested to see more