Hi R0cksalt,don't be shy with info,what device do you have,do you intend to update or replace the original maps on your device or add them using a SD card.The Mega has files and folders from many devices.If your device did not have Voice command you can't just add it by copying the ASR files.
Open your GarminDevice.xml (DO NOT Share) with Internet Explorer or Edge and you can see the file structure.
http://i67.tinypic.com/nn4eue.jpg