How to we access audio options again?

Usually in Settings, or Setup.

 

on the gen 3, it's on the mfd. while the radio is on, down in the corner.

these gen 4 questions are gonna take some time to learn.

 

I had trouble finding it too, but it's right on the main audio screen (and perhaps in other places too): touch the "sound button" in the lower right hand corner.

 

On my test drive yesterday, I found it on the main audio screen in the lower-right corner, next to the play/pause button. It wasn't intuitive to find, but it offered the same adjustments as on my '07 (bass/mid/treble and front/rear/sideways balance).

Now, in my case, the bass setting didn't seem to change ANYTHING. I think they had the subwoofer adjusted up too high in that car - we turned the bass setting all the way down on the screen and everything was still booming like a gangster's 2000-watt rap battle.