diff --git a/nixops/rpi-server.nix b/nixops/rpi-server.nix
index 21d201e3..13ea3e1e 100644
--- a/nixops/rpi-server.nix
+++ b/nixops/rpi-server.nix
@@ -12,6 +12,9 @@
   boot.loader.raspberryPi = pkgs.lib.mkIf rpi4 {
     enable = true;
     version = 4;
+    firmwareConfig = ''
+      dtparam=audio=on
+    '';
   };
   boot.kernelPackages = if rpi4 then pkgs.linuxPackages_rpi4 else pkgs.linuxPackages_rpi3;
   hardware.deviceTree.enable = true;
@@ -129,7 +132,14 @@
   services.printing.defaultShared = true;
   hardware.sane.enable = true;
   hardware.sane.extraBackends = [ pkgs.hplip ];
-  networking.firewall.allowedTCPPorts = [ 631 ];
+
+  sound.enable = true;
+  hardware.pulseaudio.enable = true;
+  hardware.pulseaudio.systemWide = true;
+  hardware.pulseaudio.tcp.enable = true;
+  hardware.pulseaudio.tcp.anonymousClients.allowedIpRanges = ["192.168.1.0/24"];
+
+  networking.firewall.allowedTCPPorts = [ 631 4713 ];
   networking.firewall.allowedUDPPorts = [ 53 67 ];
 
   nix.binaryCachePublicKeys = ["nixbld.m-labs.hk-1:5aSRVA5b320xbNvu30tqxVPXpld73bhtOeH6uAjRyHc="];