> If anyone has any other suggests please feel free to weigh in

The 4066 element can be used as a digitally-controlled variable
resistor, or used to switch another resistor, if you feel the need
for volume control such as balancing

Drive the Control pin with PWM that has a variable duty cycle,
and the resulting effective resistance is proportional to that

R x (On time / Off time)

A not-unknown technique in semi-digital applications, such as
early synthesisers, to vary multi-pole filters etc with a single
control voltage that alters a common PWM driver section

PWM frequency an be several hundred kHz to avoid aliasing
with the audio signals

Joe
--=20
http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
.