Disklavier

I have a DKC850 on my E3 grand. I remember when the guy set it up for me, we
got connected to the Yamaha site and streamed music to it to have it play,
and also used my iPad, connected to the 850 via Bluetooth, then streamed the
iPad video to a Tv via AppleTalk to actually watch an artist play and hear
it on the piano.
 
I haven't used this in almost a year although I keep paying the $20/mo to
Yamaha, and started to try to get it going again today, and cannot remember
how to setup either of the above.
 
Can anyone outline what is required for that?  Thanks!