Disklavier

I'm curious about current or future options for viewing concert video on my HD Plasma TV while my Disklavier Mark III with the DKC-850 plays the piano part?

What about Disklavier Radio and a simul-cast where the HD video is played on my plasma TV from my cable box and the piano plays along based on it's connection to Disklavier Radio.

I have Blu-Ray DVD's of Elton John concerts where he plays a Yamaha piano that I watch in my home theater.  I'd like to have my Disklavier play to Elton's keystrokes while I watch the video.

Has anybody done this or is this a near-term future?

Thanks!