Default Device maintainer I need help with "audio.r_submix.default.so"

I was hoping a device maintainer can help add audio.r_submix.default to the product_packages in the device.mk file for p-3110. I'm trying to get #mirrorenabler to work so I could mirror my screen to my chromecast. This is thread on #mirrorenabler says you would know about the audio.r_submix.default.so. Default.

Here's the link on xda - http://forum.xda-developers.com/hard...evice-t2812193

Thanks for any and all help