Device Information:
ASUS TF700T Transformer Infinity
OS: Android version 4.1.1, CleanROM Inheritance 3.2

Symptoms:
If I turn off music in the audio options, the next time I start up the game it will be reset back to its previous level no matter how I exited the game.

Example 1:
I enter the game. Sound FX is set to level 10, Music is set to level 3. I set Music to mute, then immediately log out/exit the game via the menu options. I start up the game. Music is back to level 3.

Example 2:
Enter the game, log in, play for a while. Mute Music. Change applications without exiting. Come back later, long enough to force the game to reload. Music is turned back on, again at level 3.

It's probably because you pressed OK instead of Apply. There is a difference between the two, OK sets it for the remainder of the play session, Apply sets it permenantly until you change it otherwise.

idd, that should not be the case. If it is, then that's a different bug that needs to be addressed.

I've had trouble w/Android not always saving my key binds and some graphics settings too. Even if the game (seemingly) exits cleanly. Might be the same problem.

I haven't checked the logs yet though. Usually can't since I'm logging off and have to go do [real life thing here].

Apply means to apply it immediately, keeping the menu open.
Ok does an apply and then closes the menu.

If you don't exit VO by logging off and then selecting Quit in the login menu, some settings don't get saved. That problem was supposed to have been fixed for most settings, including key bindings.
If the settings aren't saved after a proper exit, then that's a bug.

Found the problem with the settings not getting saved properly. The next update will have the fix.