If you want to stream audio from your software and you have an audio interface that has one unused stereo inputs or two unused mono inputs, you can then do the following:

SETUP B: Routing audio with one audio interface via spare line input After connecting OBS to your YouTube Live or Twitch accounts, you are now ready to start streaming your performance! Find more about how to setup and trouble shoot OBS on this OBS website. Make sure that the meters in OBS are reacting to sound playing in TRAKTOR.In our example, we are selecting Komplete Audio 6 MK2: In the new window that opens, select your audio interface as a Device.Click on the box next to Make source visible and save your settings by clicking on OK.In the window that opens, select Create New and name the device according to the soundcard you are using here, we are naming it KA6MK2 for the KOMPLETE AUDIO 6 MK2.Open OBS. In the Sources area at the bottom of the main OBS window, click on the + icon and select Audio Input Capture.Download and install the free streaming app OBS Studio from the OBS Project website.Note: if you are using In 1 and In 2 of the Komplete Audio 6, make sure that the inputs on the audio interface are set to LINE and adjust both GAIN knobs equally to get a perfect stereo balance and low enough to avoid distortion. Depending on how you connect your speakers, you can also use a TRS 1/8' to dual mono 1/4' cable and connect the 1/8' jack to the S2 MK3 and the 1/4' jacks into In 3 and In 4. The Left (L) output goes to In 3 and the Right (R) output goes to In 4. In this case, we are routing the RCA outputs of a TRAKTOR KONTROL S2 MK3 into the In 3 and In 4 of a KOMPLETE AUDIO 6 MK2. Connect the outputs of your mixer or controller into the inputs of your secondary audio interface.If you are experiencing issues, please refer to our Traktor & DJ Help.

Play a song and do a quick soundcheck to verify that audio is output on the Main-Out and Headphone-Out as expected.

Connect your DJ controller or DJ mixer to the laptop as you usually do and launch TRAKTOR PRO (or TRAKTOR DJ).

If besides your mixer or DJ controller you have a second audio interface, follow the steps below: This method is possibly easiest but not necessarily accessible to all.

How to connect obs to twitch video