diff --git a/OpenRA.FileFormats/Filesystem/D2kSoundResources.cs b/OpenRA.FileFormats/Filesystem/D2kSoundResources.cs
new file mode 100644
index 0000000000..977cecc66f
--- /dev/null
+++ b/OpenRA.FileFormats/Filesystem/D2kSoundResources.cs
@@ -0,0 +1,109 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2013 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation. For more information,
+ * see COPYING.
+ */
+#endregion
+
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Globalization;
+using System.IO;
+using System.Linq;
+
+namespace OpenRA.FileFormats
+{
+	public class D2kSoundResources : IFolder
+	{
+		readonly Stream s;
+
+		readonly string filename;
+		readonly List<string> filenames;
+		readonly int priority;
+
+		readonly Dictionary<uint, PackageEntry> index = new Dictionary<uint, PackageEntry>();
+
+		public D2kSoundResources(string filename, int priority)
+		{
+			this.filename = filename;
+			this.priority = priority;
+
+			s = FileSystem.Open(filename);
+			s.Seek(0, SeekOrigin.Begin);
+
+			filenames = new List<string>();
+
+			var headerLength = s.ReadUInt32();
+			while (s.Position < headerLength + 4)
+			{
+				var name = "";
+				var letter = s.ReadASCII(1);
+				while (letter != "\0")
+				{
+					name += letter;
+					letter = s.ReadASCII(1);
+				}
+
+				var offset = s.ReadUInt32();
+				var length = s.ReadUInt32();
+
+				var hash = PackageEntry.HashFilename(name, PackageHashType.Classic);
+				if (!index.ContainsKey(hash))
+					index.Add(hash, new PackageEntry(hash, offset, length));
+
+				filenames.Add(name);
+			}
+		}
+
+		public Stream GetContent(uint hash)
+		{
+			PackageEntry e;
+			if (!index.TryGetValue(hash, out e))
+				return null;
+
+			s.Seek(e.Offset, SeekOrigin.Begin);
+			var data = new byte[e.Length];
+			s.Read(data, 0, (int)e.Length);
+
+			return new MemoryStream(data);
+		}
+
+		public Stream GetContent(string filename)
+		{
+			return GetContent(PackageEntry.HashFilename(filename, PackageHashType.Classic));
+		}
+
+		public bool Exists(string filename)
+		{
+			return index.ContainsKey(PackageEntry.HashFilename(filename, PackageHashType.Classic));
+		}
+
+		public IEnumerable<string> AllFileNames()
+		{
+			return filenames;
+		}
+
+		public string Name { get { return filename; } }
+
+		public int Priority { get { return 1000 + priority; }}
+
+		public IEnumerable<uint> ClassicHashes()
+		{
+			return index.Keys;
+		}
+
+		public IEnumerable<uint> CrcHashes()
+		{
+			yield break;
+		}
+
+		public void Write(Dictionary<string, byte[]> contents)
+		{
+			throw new NotImplementedException("Cannot save Dune 2000 Sound Resources.");
+		}
+	}
+}
diff --git a/OpenRA.FileFormats/Filesystem/FileSystem.cs b/OpenRA.FileFormats/Filesystem/FileSystem.cs
index 26e6af6f92..886f308046 100644
--- a/OpenRA.FileFormats/Filesystem/FileSystem.cs
+++ b/OpenRA.FileFormats/Filesystem/FileSystem.cs
@@ -53,6 +53,8 @@ namespace OpenRA.FileFormats
 				return new ZipFile(filename, order, content);
 			else if (filename.EndsWith(".oramap", StringComparison.InvariantCultureIgnoreCase))
 				return new ZipFile(filename, order, content);
+			else if (filename.EndsWith(".RS", StringComparison.InvariantCultureIgnoreCase))
+				throw new NotImplementedException("Creating .RS archives is unsupported");
 			else if (filename.EndsWith(".Z", StringComparison.InvariantCultureIgnoreCase))
 				throw new NotImplementedException("Creating .Z archives is unsupported");
 			else
@@ -71,6 +73,8 @@ namespace OpenRA.FileFormats
 				return new ZipFile(filename, order);
 			else if (filename.EndsWith(".oramap", StringComparison.InvariantCultureIgnoreCase))
 				return new ZipFile(filename, order);
+			else if (filename.EndsWith(".RS", StringComparison.InvariantCultureIgnoreCase))
+				return new D2kSoundResources(filename, order);
 			else if (filename.EndsWith(".Z", StringComparison.InvariantCultureIgnoreCase))
 				return new InstallShieldPackage(filename, order);
 			else
diff --git a/OpenRA.FileFormats/Filesystem/InstallShieldPackage.cs b/OpenRA.FileFormats/Filesystem/InstallShieldPackage.cs
index bff057b838..da156fbbfa 100644
--- a/OpenRA.FileFormats/Filesystem/InstallShieldPackage.cs
+++ b/OpenRA.FileFormats/Filesystem/InstallShieldPackage.cs
@@ -87,7 +87,7 @@ namespace OpenRA.FileFormats
 			var FileName = new String(reader.ReadChars(NameLength));
 
 			var hash = PackageEntry.HashFilename(FileName, PackageHashType.Classic);
-			if(!index.ContainsKey(hash))
+			if (!index.ContainsKey(hash))
 				index.Add(hash, new PackageEntry(hash,AccumulatedData, CompressedSize));
 			filenames.Add(FileName);
 			AccumulatedData += CompressedSize;
@@ -102,9 +102,9 @@ namespace OpenRA.FileFormats
 			if (!index.TryGetValue(hash, out e))
 				return null;
 
-			s.Seek( dataStart + e.Offset, SeekOrigin.Begin );
-			byte[] data = new byte[ e.Length ];
-			s.Read( data, 0, (int)e.Length );
+			s.Seek(dataStart + e.Offset, SeekOrigin.Begin);
+			var data = new byte[e.Length];
+			s.Read(data, 0, (int)e.Length);
 
 			return new MemoryStream(Blast.Decompress(data));
 		}
diff --git a/OpenRA.FileFormats/OpenRA.FileFormats.csproj b/OpenRA.FileFormats/OpenRA.FileFormats.csproj
index 89b9dcb1ff..3c846f7fe6 100644
--- a/OpenRA.FileFormats/OpenRA.FileFormats.csproj
+++ b/OpenRA.FileFormats/OpenRA.FileFormats.csproj
@@ -145,6 +145,7 @@
     <Compile Include="Graphics\HvaReader.cs" />
     <Compile Include="StreamExts.cs" />
     <Compile Include="FileFormats\WavLoader.cs" />
+    <Compile Include="Filesystem\D2kSoundResources.cs" />
   </ItemGroup>
   <ItemGroup>
     <BootstrapperPackage Include="Microsoft.Net.Client.3.5">