Disklavier

I just bought an MX80 for $5400 in florida.... It is one of the older 
units that I understand only plays eseq files... My unit is DKC5R.

I do not have any single density disks, so I tried "tricking" it by 
covering the hole on the lower left... I formated it using windows98 
as 720 and then ran the dkvutilities included in the files here...
(Very good documentation)  I placed the disk in the disklavier and it 
said 'Convert disk'... so I formated it on the unit (thanks 
slickfix2) then I re-ran the dkvutilities .. now it just shows number 
1  but does not play.... Have I missed something or could it be I 
just need to use the real single density disks? 

Also, what hardware and software would be needed to hook my laptop to 
the device to use instead of these old floppies?  

Thank you...