lspci | grep -i audio # kernel

USE=sound-server emerge media-video/pipewire
emerge media-libs/libpulse media-video/wireplumber

mkdir .config/pipewire
cp /usr/share/pipewire/pipewire.conf .config/pipewire/
cp /usr/share/pipewire/pipewire-pulse.conf .config/pipewire/

vim ~/.config/pipewire/*
vim ~/.config/mpd/mpd.conf

emerge pulsemixer

pactl info | grep "Server Name"