My radio tuner is connected to line in.
In function of your tuner, change "Mixer Source" from "Preference" to:
default/Line or default/CD or hw:0/Line or etc.
My radio tuner is connected to line in.
In function of your tuner, change "Mixer Source" from "Preference" to:
default/Line or
default/CD or
hw:0/Line or
etc.