If you actually navigate into the Style Demos Audio folder in Finder, outside of Band-in-a-Box, do you actually see the file _GUAJIRA.m4a, and if you double-click to play it, does it play in the default m4a player on your system?

If not, could you press command+I on the Style Demos Audio folder (get info), and set the permissions to read and write for all, and click apply to enclosed?

Andrew
PG Music Inc.