Disklavier

Hi, I am thinking about buying a 1997 upright w/ Disklavier.  It uses floppy disks which makes me hesitate.  I want to make sure that I can get floppies with the piano pieces that I want.  I have an old PC that has a 3.5 floppy drive, but I don't know where to go to find and download the music I want (ragtime, bach, beethoven, Mancini, etc,).  I thought that this newsgroup would connect me to where to find such, but I can't figure it out.  Is there a FAQs section somewhere?  I apologize for my computer/newsgroup illiteracy.  Thanks!  Robert