Hi, you can connect a headset like the one I linked with the headphone plug to the computer so it works with the plug, I have a friend who has UBS plugs. And that somehow makes me unsure that I just say files that I'm talking about will be transferred.
https://www.gamestop.ch/Switch/Games/69210/play-stereo-headset-nintendo-switch
Sure, you only need to specify AUX as the audio source.