Access to the PC speaker for audio feedback was made possible by code extracted 
from beep, by Jonathan Nightingale.

Thanks also to the authors of timidity for the inspiration to create a 
software-only MIDI recorder, and more importantly, a way to play the files.

None of this project would be possible without the technical information on the 
MIDI file format posted on the web by Jeff Glatt.

Credit is due to sourceforge.org, for freely providing a distribution channel 
and a home for open-source programs.