Hello Glen & Roger,
I am wondering whether your original software has been loaded correctly to the KN7. When I bought my Kn7 it came with TWO disks, the first one was an original Factory disk and the second (which needed to be loaded immediately after the first) was an 'update' to correct a known fault the keyboard has. I am using Version 1.3 on my KN7, and to date, I have not had any real problems with it only the usual 'USER' errors....
The other thing is I think a 1GB card isn't really big enough to take many more than 3 CDs (depending on the size of the tracks of course). If you cannot get a larger one from the local shops, try some of the computer firms on the net, they're very much cheaper anyway. I almost always use the Sandisks because I know they are reliable and the Company has a no quibble return policy. If for any reason I need to get another in a hurry (say for my camera) and Sandisk is not available, I use Kingston.
By the way, have you tried using a Pen Drive? I have several of my own CDs on a 4GB Pen Drive and the great advantage of this is I can use it on any other PC, plus it also carries all my music titles, so I can instantly see if I already have a song before making another purchase. It's very useful with a laptop.
These are just some ideas running through my head. If I think of any else, I'll post again.
Good luck! Audrey