Disklavier

I am hoping someone can steer me to a good resource.   I have a 8 
foot baby grand with disklavier including the old control wagon 
dkw10.  In addion I have the Dom-30 unit.   

We have always loved to setup for playing music in our house and have 
recently connected a computer to the setup and that makes it so much 
more enjoyable as we can make playlists and not have to use disk.

In case anyone is interested in hooking their computer to the 
disklavier I highly recommed the site http://www.carolrpt.com/ she 
has step by step instructions that were invaluable to me.

However I am having a bit of trouble with the Dom-30 unit when I play 
midi trought the computer.  It seams that the Dom-30 unit is not 
selecting the proper voice like it does when I play the song via the 
dkw10 disk drive.   

I have the midi out from the computer into the midi in of the piano, 
and then have the out of the pinano going to the Dom-30 just like 
before the computer. 

Thanks in advance for any possible resources to help me set up and 
configure this so that I may enjoy my mulitrack Midi files.