Disklavier

Hello, I am in the process of trying to sell my still very new looking MPX1 of the Mark II XG Series. A person interested in buying had 2 questions which I could not answer:
1. How many minutes can a 1.44 MB HD Diskette record when playing a "normal" classical song
2. Is it today (May 2009) still possible to get the CD- storage device (is it called DCD1?) on the market in order to be able to record musical pieces which last approximately 20-30 minutes.

Thank you all for helping me out
Uli