I've been busy at work and at home with two daughters, wife and dog. I have managed to squeeze in some playing time on the new piano. I found a couple of articles to help me understand midi files, which is how music is stored in my digital piano. The best analogy I found on describing midi was midi files are like music paper rolls for player pianos.

-Chris

What is MIDI, Anyway?

MIDI and MP3: What's the Difference?

How to Convert MIDI to MP3 or CD