if you had a card reader you would see a drive in my computer, and would be able to drag and drop. But the 7000 will not see the mp3 files that way.
This is defined by the decision to use SD cards, since Frankfurt was too early to show any programs. The encryption which makes the SD format attractive to the companies signing up for it means that you are forced to move mp3/aac files through the Jukebox program, and cannot do it through windows explorer. It should not be too much of a problem as long as you backup all audio before transfering because of the checkout limitation.
That's why I would have liked compact flash, but panasonic had to push their own format I suppose!
I also await whatever extension plug-in software arrives with interest.