Can't access MM² when run on 'localhost'

[C-son]

Hi all!
I’ve installed a Raspberry Pi camera and also the MMM-MotionDetector module, which works perfect. But since this module requires MM² to run at ‘localhost’ and not ‘0.0.0.0’ (due to requirements in Chrome for getUserMedia) I can’t access the MM2 from my PC at http://[MM²-IP]:8080/. As for what I understand the proxy solution mentioned in the README for the motion detector module is for other modules, not for accessing MM² from another device.
Is there some kind of guide for a novice when it comes to these kinds of things, how to make my mirror accessible again?