Disklavier

"The midi file has to have a piano track and it has to be 0 or 1?
If it's not, is there a way of moving the tracks around?
Is there a software package that will let me do basic editing for
producing files to play on the disklavier."

The easiest way to get the piano voice to play on your model is on page 70 of your owners manual.

press the [FUNCT] button.
while the cursor is pointing to [PIANO PART] press enter
use the right arrow button to get to the import file setting.
use the [+/YES] button to change the import file to R= Prg(all). 

Mark Wisner
Piano Service
Yamaha Corporation
mwisner@yamaha.com