What possibilities does the
PianoDisc-computer-player-piano have?

...it has much less than the Bösendorfer 290 SE Computer piano of Wayne Stanke but the SE are no more available so that the market only offers the MIDI-formatted systems.
The about 40 existing SE grand pianos can reproduce an incredible over 1000 dynamic grades and are really unbeatable in quality! Listen to a recording with a 290 SE which is part of the CD "Klavierabend" of Wolfgang Ellenberger. Don´t you believe it that this recording has been done without any person sitting in front of the 290 SE...!
You can also peep in on the Bösendorfer SE-club site as part of the Bösendorfer-Site.

You can play recorded disks of a huge software catalogue:

There are recordings of all musical stiles:

Classical: Horrovitz, Rubinstein, Rachmaninov, Elly Ney, etc.

Musical: Phantom of the opera, hair, etc.

Jazz: famous pianists

Country

"Candlelight & Bar music"

The Symphony sound system adds an electronical sound to the pure ayoustical piano sound: the whole orchestra or a Jazz band...

You can change

Volume: from very low to very loud continuously

Tempo: from 17 % to 200 % of original tempo

Transposition: 2 octaves high and low in half tone steps.

You can record your playing and replay right away: If you take low tempo it is an extremely good way of self control study!

The MIDI-in -out or through mode gives you all the chances for notation programs and sound equipments and communications with other instruments of the MIDI-systems.

You can play at four hands with yourself.