I'm running Xubuntu 18.04, but I imagine this should apply to any version. I have a setup where I'm running my headphones off a USB DAC/amp, and a set of speakers off the internal audio. I'd like to keep the USB DAC with a built in volume knob as the default audio device for opened applications, but I'd also like to always control the internal audio from my keyboard's volume wheel. Is there any way to go about achieving this?
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