This is a comprehensive mapping for DJ Player Professional on iOS to the excellent Reloop Mixon 4 controller.

The mapping pretty much follows standard labelling throughout, although there are a few exceptions (I may have missed some!);

- Jog wheel LEDs to show beat position

- Loop encoder = Auto Loop length...Loop LEDs working

- Shift & Loop encoder performs smaller loop increments/decrements

- Press Shift and Jog wheels show track progress

- Press Shift and CUE button LEDs flash on beat 1...easy to show if all 4 decks are in time

- the fader+fx button isn't mapped

- pressing shift & play will perform a turntable stop

- pressing shift & Sync will perform a deck shutdown action

- param -/+ perform pitch bend+/-

- shift & param -/+ perform Loop In/Out

- shift & Auto Loop performs reloop

- Beats encoder = quick scrub through track

- Press Beats encoder = Mark Bar on beatgrid

- shift & Beats encoder = move beat grid

- Tap = tap tempo

- Shift & Tap = deck FX screen

- Shift & Deck Selector = momentary deck selector

- Shift & FX button = momentary FX enabled

- Shift & headphone cue = momentary headphone cue

- loop roll button mode works, although I could only map the top 4 pad LEDs

- sampler button mode works as STEMS buttons. The top 4 buttons will mute/unmute each of the 4 stems. The bottom row do nothing.

- the slicer button mode engages DJPP 'FX' button mode...in the latest (beta 10.2.b4) version of the app this turns the 8 buttons into instant Pad FX buttons (no LEDs for these unfortunately) - if you press Shift on the screen you can use a different 8 Pad FX.

The deck Load button LED will flash when the track in that deck reaches near the end of playback...potentially you could link this to beat 1 LED blink instead to have a visual cue of how the tracks are aligned...although they'd be flashing throughout!

The FX can be applied to all 4 decks independently...using the magic of DJPP!

All VU meters & master VUs work.

The mapping also has the startup sysex message, so DJPP should recognise the positions of all encoders, knobs etc of the controller when first connected.

Feel free to add / tweak at your will. There are plenty of shades/colours to adjust the pad buttons to.