Another thing I have just noticed on my Rekordbox on the PC is that it's linking up to my XDJ-Aero from Rekordbox on the PC, but the Aero does not have the blue light on, to say it's connected. Thats is weird as the Rekordbox should not have linked up. So it seems like Rekordbox is connecting from the pc to the Aero but the Aero is not linking up to the PC.