I have setup Balena Sound and am using a cheap USB sound card from StarTech:
I know the USB audio input is experimental but it is working for me with the SOUND_ENABLE_SOUNDCARD_INPUT variable. The catch is it is taking the input from the MIC jacks, whereas I want to use the Line IN jack.
Is there some way to control which input from the Startech card is active?
I am using Raspberry Pi 4.
My goal is to connect this to my TV and use the TV as my master sound system for multi-room audio.