Disklavier

It's midnight and I'm bushed from thinking. Guess I'll try tomorrow
again. I've got the PowerTracks demo loaded. The piano is connected
with the cbx driver installed and the switch on the unit moved to PC2
but I can't seem to get anything working other than the demo songs
coming out of my computer speakers. I hope this demo lets me play the
piano through it and not just giving me some idea of what the software
looks like. There's just too many settings to know. Any of them could
be wrong or right.
A few of my settings are:

I have "enabled thru" checked.
Input drivers I have 
ESS MPU-401 (8480) and YAMAHA CBX Driver (with the Yamaha CBX Driver
highlighted.

Under the MIDI Devices menu of the software options I have,
Input drivers I have 
ESS MPU-401 (8480) and YAMAHA CBX Driver (with the Yamaha CBX Driver
highlighted.
Output Drivers , in order from top to bottom:
ESS MPU-401 (8480),
YAMAHA CBX A Driver,
MIDI Mapper,
ESFM Synthesis (8400),
(with the Top two drivers highlighted)

If any of this makes sense or if someone knows of a web page that
would guide me through setting up this software, I'd appreciate it.
I've tried reading the help menu and it doesn't make sense to me.
Many Thanks, Mike