[Nexus 6 Themes and Apps] guitardedhero:
What solution is outdated in the OP? It is priority #1 for this to be the most comprehensive and relevant resource for all things ViPER4Android which certainly requires feedback from you guys.

It is also important for me to not include any testing phase activity/information in the OP to avoid confusion and frustration when there are plenty of stable options available along with the necessary information to achieve a fuly functional installation the first time.

4.8.1 started as a custom ViPER|Atmos™ build I made for my ViPER|Atmos™ Nexus 6 rom. I was thoroughly impressed with its enhancement that I wanted to share it with you guys to get your thoughts on it. It was immediately apparent that this version was a substantial deviation from the well-known consistency of compatibility and performance to which we all have grown accustomed through all the iterations including 4.8/5.5. That was a month or more ago and I am just now understanding the necessary steps required to bring it to a state that we expect of a ViPER|Audio™ series product. I set a a highly demanding bar for appearance in the OP. A mention or a link to the audio calibration database injection would have been a disservice to many users and even myself as it would result in a flood of distractions from preparing an OP worthy product.

Even more confusing, as you will now understand, is that 4.8.1 compatibility does not equal REDUX compatibility. Ive been on Android N on my N6 for a few days now. While 4.8.1 worked perfectly for my N6 on Marshmallow, 4.8.1 broke volume output for N6 on Android N. REDUX materialized from my insistence that I was getting my beloved 4.8.1 back on my N6, now on Android N. This was a perfect scenario actually, I was finally in a state with no voice call volume output so that I could fix it. It has been the most difficult, and certainly welcomed, challenge I have faced since making an appearance here which, at long last, finally leads me to addressing your inquiry regarding your current status:

REDUX is a purposeful and intelligent injection of the Z5 Premium Marshmallow audio calibration database into ViPER|Atmos™ Sony™ Beats™ combined with ALSA build.prop lines to activate the native Advanced Linux Sound Architecture already in our devices. Whereas, 4.8.1 was an experiment to see what would stick to the wall when hurling the bag's entire contents, REDUX is composed only of existing audio environments. There is no xloud, vpt, vpt51, and surround_sound, for example, because they do not exist in the audio environment sourced for the Sony™ of Sony™ Beats™ Edition.

The audio calibration database is dependent on acdb libraries but these libraries are all over the place and not always compatible. To provide the best chance at enjoying REDUX, I need "Yes" or "No" answers to the existence of the following on an untouched rom zip:

/vendor/lib/libacdb-fts.so

/vender/lib/libacdbloader.so

/vendor/lib/libacdbmapper.so

/vendor/lib/libacdbrtac.so

/vendor/lib/libaudcal.so

/system/vendor/lib/libacdb-fts.so

/system//vender/lib/libacdbloader.so

/system/vendor/lib/libacdbmapper.so

/system/vendor/lib/libacdbrtac.so

/system/vendor/lib/libaudcal.so

/system/lib/libacdb-fts.so

/system/lib/libacdbloader.so

/system/lib/libacdbmapper.so

/system/lib/libacdbrtac.so

/system/lib/libaudcal.so