Exclamation [Q] Chromecast Mirror Enabler Help!

I am currently using a samsung galaxy xcover 2 (GT-7710) and running Vanir Rom which is based on KitKat 4.4.4. I recently purchased chromecast and was unhappy when I could not cast my screen to the TV. Then I learned of the root app Mirror Enabler and I installed it and gave it root access. But when I went into the app I was told that my ROM was not supported due to there being no "audio_submix" file. After some research I found that a file must be added to system/lib/hw. Is there anyway I can just download the file and paste it there? Or is there a flashable zip file or even any other way to install this file on my phone. Thanks for you help.