Anyone know how to take sound from Elgato HD60S+ analogue in, instead of device mic?

[Portland Bill]

I'm trying to stream using a Pioneer DDJ1000, and I'd like to plug my DDJ audio out into the Analogue Input of the HD60S+, to get a direct stream of audio, but when I do, OBS just continues to record from the camera mic, which sounds awful.

Any suggestions?