A new version of rekordbox 4.0.8 was released on Feb 24, 2016.
-XDJ-RX. Full HID connection established enabling Track Browsing and Waveform Display.
(Please update XDJ-RX firmware v2.00.)
Compatible devices added:
-Drag and drop to load the same track from one deck to another without stopping the first deck.
-Improved stability and fixed other minor issues.