Disklavier

I am wondering if anyone has loaded a CD with Midis into their
Disklavier Mark IV and played midis from that device.  I know that it
is doable and just have a quick question .....

Can I put the midis in folders on the CD when I burn the CD of midi
files?  Will it recognize the folder structure or do I need to just
put midi files on the CD?  

If I have another file amongst the midis such as an Excel document
will this be ignored?

Thanks,
Joan

I am trying to backup some of the classical and piano rolls with
proper names in the midis so that I can play them from a CD I burn
rather than loading them onto the hard drive.