AudioVMs in 4.1

In Qubes 4.1 alpha pre-release, how do I redirect the audio output to another VM (as opposed to dom0)? I’ve noticed that already discusses Qubes 4.1, but I’m confused about how to use qrexec services. Can someone spell out the exact commands I have to execute to get this running? Or is it not ready yet? From reading some other messages, I believe that at some point there is going to be a GUI for making this work.