The LED was very jittery, almost constant on.
The MSGEQ7 has a strobe pin and a reset pin, that setting them on and off, in timed sequences, sets the output pin to output the peak of a specific band (0 to vcc volt).
What I did noticed in my testing is that the higher the volume is, the higher the average level, which limits the output voltage range.
I wish I could somehow "lower" the output from the MAX4466 when the sound is loud. Some circuit between the MAX4466 output and the MSGEQ7 input, that the more loud the output is the more the circuit lower it.