Hi Katrina,

The SD Jukebox program will only work with the Panasonic USB SD Card Reader/Writer module. It won't work with any other generic SD Card readers, whether they are external or internal on your Laptop. Why Panasonic imposed this restriction is beyond comprehension !!!
Your only chance is to obtain the "SD Audio PC Writing Kit SZ-CB7" which included the reader/writer module..... The kits do appear occasionally on eBay - try registering a 'Watch' for Technics/Panasonic items on eBay and you can be alerted by email when they appear for sale.

As an alternative, you could use an MP3 player connected to the Line Input of your KN7000 to play your 'backing tracks'. I know of other KN7000 owners who have used this method, and whilst not quite so convenient as playing from an SD Card in the KN7000, it does provide a workable alternative.