There are always olny 2 Folders on the USB drive. PIONEER & Content. The Content Folder contains your Music and the PIONEER Folder contains artwork, CDJ, MPJ, rekordbox, USBANLZ and 3 Setting files.
When plugging the USB into my XDJ-1000 it is showing the Music. I have to press the 'back' button to get to the overview Screen to see the Playlists as well.