[Galaxy S III Android Development] CPA Poke:
I think it's apparent that the OP's first language is not English...so maybe we can all ease up on the "read the OP instructions, idiot" comments? Normally those comments are well-deserved, but I think this is a unique scenario.

Next, I have been trying this mod for the past few weeks (albeit on my Galaxy Note i717, not an SIII), trying every conceivable install method (following the instructions word for word) but never getting anything 100% working. Tried on various JB ROMs (AOCP, CM10 stable/nightlies, and PA...All most recent builds) and ICS ROMs (Padawan, Black Star, AOCP 2.1, and Novena). I never had any boot loops or other unrelated phone issues, but my primary problems were as follows:

- No matter what add on I installed, the EQ settings never worked on PowerAmp. This is by far my favorite player from a UI standpoint, so I was always disappointed that it didn't work. The mod worked on Apollo and Noozy Player (from the add on), but I either had force close problems with the players or I didn't like the UI. And yes, on PowerAmp I disabled direct volume control and disabled all in-app equalizers.

- Noozy was by FAR the best sounding player with the mod, but I couldn't multi task for more than 2 or 3 songs without the Player inexplicably closing (no error message or anything, just stopped playing abruptly and took forever to reload when reopened). I even adjusted the apps OOM priority to "never kill" using Auto Memory Manager, but that didn't help at all. So that was a no-go unless I didn't need to use my phone for some other purpose besides listening to music. This still happens, but I don't care anymore...for reasons you'll see below :)

- Both Noozy and Noozxoide just seemed like they were "incomplete". I had nothing to base this on, they just appeared to be missing a functionality here and there that I assumed would be there.

- The Dolby app that appears didn't appear to make a difference when opened. This is still the case, but I still open it every time I boot up because it's using SU privileges for SOME reason...so ill just trust the devs on that one.

- Walkman was always too buggy to use. Eventually I stopped bothering to install it.

Other background:

- Always flashed on fresh install (full wipe) or dirty flash of ROM...never installed over previous version of AC!D. Always removed any DSP app that came with the ROM prior to flashing.

- Always flashed Samsung-specific AROMA zip, and only one add on each time per the instructions. Cleared cachd/dalvik before flashing.

- Let boot for 15 minutes without touching anything, then rebooted after verifying app was installed (per instructions).

So...All of that said, I inadvertently stumbled upon an error-free setup of this mod that, thus far, has worked on every music player I've tried. Here's what I did:

1. Downloaded UNIVERSAL FLASHABLE zip from the other AC!D thread + the Noozxoide add on zip from that thread. NOT the AROMA installer found in this thread, NOT Samsung-specific.

2. My pre-flash preparations didn't change from what I discussed above. Make sure all other DSP apps/mods are un installed (reboot s couple of times after just to make sure they're wiped...or do a full wipe/dirty flash of your ROM). Used most recent CWM Touch recovery. Wiped cache/dalvik.

3. Flashed AC!D simple zip. Flashed Noozxoide add on. Cleared dalvik. Reboot and let sit for 15 minutes. Reboot again.

4. Added build.prop lines from OP using ES File Explorer. CHANGE PERMISSIONS to rwx-rwx-rwx before opening build.prop, otherwise you probably won't be able to save your changes. Copy lines exactly as written in OP. Leave one space in between the last line of the original build.prop and the "##AC!D...." line. After copying, go through LINE BY LINE (especially the last line) and make sure there are NO extra spaces at the end of the lines. SAVE THE CHANGES, CLOSE, THEN RE-SET THE PERMISSIONS ON THE FILE TO RW-R-R. I imagine that will solve about 99% of the boot loop problems people are having after modifying the build.prop. So far I haven't noticed any significant changes in sound quality or settings availability as a result of the changes, but I'll just take the devs word for it.

5. REBOOT. Let your phone sit for another 10 or 15 minutes before messing with anything.

6. Go into Settings > Sound > Music Effects and make sure Noozxoide is checked instead of MusicFX.

7. Open the Dolby App that should now be in your app drawer...don't click anything once the app is opened, just grant SU rights if it prompts you and then hit the menu button to go back to your home screen.

8. If you're like me and have multiple music player apps, go into each one and make sure that NO IN-APP EQUALIZERS ARE ENABLED. Especially on PowerAmp if you have it, go to Settings > Audio > Advanced Tweaks and UNCHECK "Direct Volume Control". Then navigate to the Equalizer/Tone screen and in check all toggles for EQ, Tone, etc.

9. If Noozy Player works for you after playing around with it for awhile, I highly recommend using that. Best sound quality by far. If not, the best player IMO in terms of usability is PowerAmp - so I recommend that as a 2nd option. In my experience, the sound quality is the same in all apps I tried (except Noozy), so really just choose the one that you like the most.

As I mentioned above re: the build.prop tweaks, I really have no idea what steps above actually make a difference...All I know is that when I follow that protocol, everything works and the mod is fantastic.

Hopefully this helps some of you who are in the same boat as I was!