I have no clue what that Linear adjustment (LINEAR) is for, or how to access it. When I Press AUD on my radio, there are four settings that are displayed where I can control the Bass, Treb, Bal and Flt.

What the heck is Flt anyway?

I Suppose I'm trying to adjust the Tone. However, I noticed on the display that the upper level is way over to the left and the lower level is centered in the middle (Right now it TONE FLAT?). How do I adjust this setting?

Normal FM Radio:
https://drive.google.com/file/d/0BzI...ew?usp=sharing

AUD Display
https://drive.google.com/file/d/0BzI...ew?usp=sharing