Aumix Configuration Help
 

I have Austrumi running in my Laptop with Conexant AC-Link Audio.
Austrumi has Aumix as its sound controller.
For any Linux distro with Kmix I need to turn off "External Amplifier" under "Switches" TAB in Kmix to get audio. If the "Switches" TAB is absent I use alsamixer in command mode to mute "External Amplifier".

How do I do it in Aumix? What command do I use?