How to get audio expansion card working with PipeWire? (Linux)

AMD Framework 13 running Gentoo Linux with PipeWire for audio.
The built-in jack works, but I can’t get audio out of Framework’s audio expansion card.
Any tips?

The Linux tag isn’t showing up as an option for me on this thread.

Solution:

  1. Find id of audio expansion card (make sure headphones are plugged into it):
wpctl status
  1. Set it as the default sink:
wpctl set-default INSERT_ID_HERE