bash set ALSA loopback

VOL=80;
VOL255=230;

amixer set "Loopback Mixing" Enabled;
amixer set "Auto-Mute Mode" Enabled;
amixer set "Input Source" 'Line';
amixer set "Input Source",1 'Line';

amixer set "Master" 80;
amixer set "PCM" $VOL255;
amixer set "Front" $VOL;
amixer set "Line" $VOL;
amixer set "Headphone" $VOL;

amixer set "Capture" $VOL;

------------------------------------------