Hello, I was looking for a RP8000 mapping for Rekordbox DJ, but couldn't find one, so I made my own. There is still some issue I need to fix, but it can be a start point if you want to make your own. 

It was made with Rekorbox 5.0.1, so I don't know if it work with previous version. Also it's for a 2 deck setup with 2 RP8000. Here is how it's map :

- Cue : from 1 to 7 it's regular "Hot Cue", one hit to set it, and then it should light up. To delete just press the cue bouton and the hotcue you want to delete. 

Special thing here is that I use the 8th cue as a jump to start track, I do that because Rekordbox don't mark the first hotcue automatically (like Traktor) and as I don't use controler or CDJ, it's the best way I find to go back to the begining of a track without having to think of marking the 1st hotcue point (if you got a solution to change that, don't hesitate to let me know).

- Loop : the loop mode here control the "Slicer" mode, so from 1 to 8 it's slicer mode. 
If you push the loop mode a 2nd time, the pad become the control for "Pad FX 2" (by default it's Slip loop from 1 to 4 and Rev Roll from 5 to 8)

Note that the "Pad Fx 2" menu don't appear on screen when you choose it on the RP, it's because I didn't find a way to map the loop button for "Slicer" and "Pad FX 2", but it still work (even if apparently the slip loop doesn't work when its on slicer mode, so you maybe have to press cue then loop - on the RP - to activate this mode, I don't know why, maybe conflict with slip mode)

- Sample : This control the "Pad FX 1", from 1 to 8, it's FX from 1 to 8 and if you press sample+pad1 to 8 it's FX from 9 to 16

- User : I use this part for the fonction I use the most, but you can easily delete them and map your own. On my version it's like that : Pad 1 : Quantize
Pad 2 : Slip mode
Pad 3 : Sync
Pad 4 : Key down