DDJ-WeGO - Master Out to MIC - Mic input not recognized - Windows 7 / Audacity / Serato Intro

Hi, I'm not able to use the wego mic in order to record my mixes. In theory, plugging an RCA from the Master Out to the MIC should enable me to record mixes in third party software like audacity. Windows recognizes the MIC as present, but when playing anything through the WeGO, sound input is not being detected on the OS and of course, no signal is detected while monitoring in audacity. 

My setup is a DDJ-WeGO, with latest drivers & firmware, working on a Windows 7 Proffesional 64bits. 

I've confirmed the cable is working allright, mic volume knobs are all high...in fact when I tested the cable output going to external speakers im getting a signal just fine, sound output is there. The problem is when I plug the able directly into the mic, its like the MIC is not receiving any input signal from the master out.

I've attached a screen shot of my cable setup + screenshots of audacity and windows system recognizing the wego mic as present. 

Is this setup not possible with Wego? Please Help!

Ideally i want to use serato intro and record my mixes, their support recommend this setup, but its clear that the problem is more basic as not even windows is recognizing the mic input signal, but it does recognize the device. Do you guys know a good way to record mixes with serato intro and a DDJ WeGO?

Thanks in advance for the help