diff --git a/maintainers/maintainer-list.nix b/maintainers/maintainer-list.nix
index 0ce265a39314..94a90d91013b 100644
--- a/maintainers/maintainer-list.nix
+++ b/maintainers/maintainer-list.nix
@@ -8291,6 +8291,12 @@
       fingerprint = "5B93 9CFA E8FC 4D8F E07A  3AEA DFE1 D4A0 1733 7E2A";
     }];
   };
+  lorenz = {
+    name = "Lorenz Brun";
+    email = "lorenz@brun.one";
+    github = "lorenz";
+    githubId = 5228892;
+  };
   lorenzleutgeb = {
     email = "lorenz@leutgeb.xyz";
     github = "lorenzleutgeb";
diff --git a/pkgs/applications/audio/dolbybcsoftwaredecode/default.nix b/pkgs/applications/audio/dolbybcsoftwaredecode/default.nix
new file mode 100644
index 000000000000..5d5c057d724b
--- /dev/null
+++ b/pkgs/applications/audio/dolbybcsoftwaredecode/default.nix
@@ -0,0 +1,31 @@
+{ lib, fetchurl, stdenv, unzip, fpc }:
+
+stdenv.mkDerivation rec {
+  pname = "dolbybcsoftwaredecode";
+  version = "april-2018";
+
+  src = fetchurl {
+    url = "mirror://sourceforge/dolbybcsoftwaredecode/April-2018/SourceCode.zip";
+    sha256 = "sha256-uLcsRIpwmJlstlGV8I4+/30+D9GDpUt7DOIP/GkXWp4=";
+  };
+
+  nativeBuildInputs = [ unzip fpc ];
+  buildPhase = ''
+    fpc DolbyBi64.PP
+  '';
+  installPhase = ''
+    mkdir -p $out/bin
+    cp DolbyBi64 $out/bin/
+  '';
+
+  meta = with lib; {
+    description = "A Dolby B & C software decoder";
+    homepage = "https://sourceforge.net/projects/dolbybcsoftwaredecode/";
+    maintainers = with maintainers; [ lorenz ];
+
+    # Project is has source code available, but has no explicit license.
+    # I asked upstream to assign a license, so maybe this can be free
+    # in the future, but for now let's play it safe and make it unfree.
+    license = lib.licenses.unfree;
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index c6f723013a0a..0a605b04c02c 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -1366,6 +1366,8 @@ with pkgs;
 
   davinci-resolve = callPackage ../applications/video/davinci-resolve { };
 
+  dolbybcsoftwaredecode = callPackage ../applications/audio/dolbybcsoftwaredecode { };
+
   dwarfs = callPackage ../tools/filesystems/dwarfs { };
 
   gamemode = callPackage ../tools/games/gamemode {