Update the system:

sudo apt update && sudo apt upgrade -y

Install Shairport Sync:

sudo apt install -y shairport-sync avahi-daemon

Configure it:

sudo nano /etc/shairport-sync.conf
sudo systemctl restart shairport-sync
sudo nano /etc/asound.conf

Linux machines can stream audio to an RPi once it works as an AirPlay sink. The desktop Linux flavours use PulseAudio or PipeWire.

Check if you are using <PipeWire:

systemctl --user status pipewire-pulse | cat

Create the AirPlay discovery configuration:

mkdir -p ~/.config/pipewire/pipewire.conf.d/
nano ~/.config/pipewire/pipewire.conf.d/raop-discover.conf

and insert:

context.modules = [
    {
        name = libpipewire-module-raop-discover
        args = {}
    }
]

Create the PipeWire-Pulse discovery configuration:

mkdir -p ~/.config/pipewire/pipewire-pulse.conf.d/
nano ~/.config/pipewire/pipewire-pulse.conf.d/pulse-network.conf

and insert:

pulse.modules = [
    { name = libpipewire-module-protocol-native }
    { name = libpipewire-module-zeroconf-discover }
]

Restart <PipeWire/code>: <pre> systemctl --user restart pipewire-pulse </pre>