The current design the microprocessor has been upgraded to a Teensy 3.1 with a micro SD breakout. The Teensy has enough processing power that it removes the need for a separate soundboard and the audio library is easily installed. This current design uses many off the self parts that require minimal modifications (such as changing gain resistors) allowing it to be easily replicated. Currently I'm working on translating the code from the previous prototype to work with the Teensy and integrating all the different components together, while documenting the steps to provide a writeup.