If you're using pulse you can use a cli called pactl to manipulate your audio devices pretty much however you want
You can also use it to change your current audio device which is one of the major sticking points for not going back to windows for me, hitting a button on my keyboard to toggle between speaker and headphones is unbelievably satisfying
Sshfs afaik is used for a different purpose than the others
I usually use it when I'm working on a remote machine for a long duration and want to use my local tools (so I don't have to install them on the server, and because using neovim over SSH on a crappy connection sucks)