Enable Chromecast Screencast on Most Rooted Devices

XDA Developer r3pwn has created an app for rooted Android devices that will allow you to mirror your device screen through your Chromecast (see video below).

You MUST be rooted. Just download the APK and install it on your device. This app will enable Chromecast screencast on most rooted devices. Just install the app, go into the app #MirrorEnabler and enable mirror status! You may need to allow it Superuser permissions.

DOWNLOAD (Source):
https://www.androidfilehost.com/?fid=95784891001616583

Chromecast Screencast video demonstration:

For those STILL having issues,
Check /system/lib/hw directory for the file “audio.r_submix.default.so”.
If it doesn’t exist, ask your device maintainer to add audio.r_submix.default to
the product_packages in the device.mk file. (You may not know what it means, but they will.)
EXAMPLE (Thanks, @runandhide05!):
http://review.teameos.org/#/c/389/

Here is a list of supported devices that have been tested working:

Tested Working:
(Aside from the officially supported devices)
Amazon Kindle Fire HD 8.9″
Amazon Kindle Fire HD 7″ (BeanStalk ROM only)
ASUS PadFone X
ASUS PadFone 2
Nook HD+ (as of v4) (ROM MUST HAVE APPLIED FIX, CHECK ABOVE)
Droid RAZR MAXX HD
Droid RAZR M
Sony Xperia Z
Sony Xperia Z Ultra
Sony Xperia Z1
Sony Xperia Z1 Tablet
Sony Xperia Z1 Compact
Sony Xperia Z2
Sony Xperia Z2 Tablet
Sony Xperia ZL
Huawei Honor 3C
HTC One M8 (Including GPE)
HTC Droid DNA (as of v4) (ROM MUST HAVE APPLIED FIX, CHECK ABOVE IN RED)
Motorola Moto X
Motorola Moto X (2014)
Motorola Moto G
Motorola Moto G (2014)
Samsung Galaxy S II (as of v4) (ROM MUST HAVE APPLIED FIX, CHECK ABOVE)
Samsung Galaxy S III (as of v4) (ROM MUST HAVE APPLIED FIX, CHECK ABOVE)
Samsung Galaxy S IV Mini
Samsung Galaxy Note II (as of v4) (ROM MUST HAVE APPLIED FIX, CHECK ABOVE IN RED)
Samsung Note 8 Tab
Samsung Note 10.1 Tab
Samsung Note Pro 12.2 Tab
Samsung Galaxy Tab 2 (as of v4) (ROM MUST HAVE APPLIED FIX, CHECK ABOVE)
Samsung Galaxy Tab Pro 8.4
Samsung Galaxy Tab S 10.5
Samsung Galaxy Tab 4
Nexus 7 2012
Galaxy Nexus (as of v4) (ROM MUST HAVE APPLIED FIX, CHECK ABOVE IN RED)
Oppo Find 7
Oppo Find 7a
OnePlus One
LG GPad 8.3 (ONLY ON V6)
LG G2 Mini (ONLY ON V6)
LG Optimus G (ONLY ON V6)
LG G Flex (ONLY ON V6)
Xiaomi Mi2
Sero 7 Pro (as of v4) (ROM MUST HAVE APPLIED FIX, CHECK ABOVE)
And possibly your smartphone/tablet! Test it out and let me know!

Stock only:
Samsung Galaxy S III
Samsung Galaxy Note 2
HTC Droid DNA

Tested Not Working:
HTC EVO 3D
Droid 4
Galaxy Nexus
Samsung Galaxy S II
Most older devices