The mapping is a reworked version of this (https://maps.djtechtools.com/mappings/1336) mapping by JaJa Artwork, so all credit to him for the heavy lifting. All I've done are reworked the performance pads.

I've set this edited mapping up to work with modern Traktor Stems, and loosely based it on the layout of the Native Instruments Traktor Kontrol S4, since that's the controller I'm most familiar with.

The mapping is for the DDJ-SX1. It has been tested to be functional on the DDJ-SX2, as well. I believe it would work with the DDJ-SX3 but I haven't been able to test it. I created it the mapping on an Intel Mac, and it is tested working on M-Series Macs as well, but I have not tested it for Windows.

-Power off the controller

-Disconnect controller USB cable from the controller and from your computer, but keep the controller's power brick plugged in

-Hold the left deck play and shift buttons, and power on the controller.

-Once the controller finishes its startup sequence, turn on the left keylock button. Once the left keylock button is illuminated, MIDI mode is on. If it is already illuminated, do not press it again.

-Power off the controller

-Plug the controller USB back into the controller and your computer

-All set!

-Download the mapping from this site, and unzip it. You should get a file called "Settings.tsi". Remember where it's located on your computer

-Open Traktor and go to the Controller Manager tab in Traktor settings

-Click Add>Import from Disk. Navigate to then import the unzipped "Settings.tsi" file.

-Traktor now imports the mapping. Next, click on the dropdown called "Device".

-For each entry starting with "PIO" or "DDJ SX", click on it, then change the In-Port and Out-Port to your DDJ SX controller

-IMPORTANT: In Traktor Settings, enable 4 FX banks. This is so instrumental brake will work

-For FX Units 2, 3 and 4, set the first effect to Turntable FX. For FX Unit 1, set the third effect to Turntable FX. This is second step to get instrumental brake to work

-All set to use!

Hotcues 1-8. You can delete hotcues by holding the hotcue mode button and then pressing the one you want to delete.

-Changed to beatjump controls 

-Top row: Beatjump -32, Beatjump -4, Beatjump +4, Beatjump +32

-Bottom row: Beatjump -1, Beatjump -Fine, Beatjump +Fine, Beatjump +1

-Changed to stems individual volume control

-Top row: Drum stem +15%, Bass stem +15%, Instrument stem +15%, Vocal stem +15%

-Bottom row: Drum stem -15%, Bass stem -15%, Instrument stem-15%, Vocal stem -15%.

-Stems in the top row will light up when their respective stem is at 100% volume, and stems in the bottom row will light up when their respective stem is at 0% volume.

-Top row: stem mute/unmute

-Bottom far left: Instrumental Brake

-Bottom left: Instrumental Unbrake

-Bottom right: Vocal stem decrease volume

-Bottom far right: Vocal stem increase volume

-Sampler pad buttons sometimes need to be hit twice to mute/unmute stems. This is a limitation of how modifiers work in Traktor. To confirm that your stems are on, you can reference the top left of tracks in the viewport

-Misc. lighting issues - sometimes buttons will light up for no reason. I'm not really sure why, haha

-Decks 3 and 4 (aka decks C and D) - stem instrumental brake are nonfunctional. this is due to a limitation of traktor FX

The other functions should operate as printed on the controller. There may be some bugs and glitches as this is my first time making a mapping, so please let me know if you run into anything and I'll do my best to fix it!