Quoted from chrisnack:
On MMr? How did you do that?!
The MMr firmware is composed of a couple linux images that are loaded up onto the beaglebone. If you're crafty, you can extract the images from the firmware file, and mount them on to your filesystem. Once mounted, you can directly access the sample files. I ran them through a program that increases the volume of the callouts. You can also enable the profanity callout if you wanted to as well.