diff --git a/ClassicalSharp/ClassicalSharp.csproj b/ClassicalSharp/ClassicalSharp.csproj
index bda21043f..90cbee10e 100644
--- a/ClassicalSharp/ClassicalSharp.csproj
+++ b/ClassicalSharp/ClassicalSharp.csproj
@@ -71,6 +71,9 @@
   </PropertyGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.Targets" />
   <ItemGroup>
+    <Reference Include="SharpWave">
+      <HintPath>SharpWave.dll</HintPath>
+    </Reference>
     <Reference Include="System" />
     <Reference Include="System.Drawing" />
     <Reference Include="System.Windows.Forms" />
@@ -243,6 +246,9 @@
     <None Include="..\readme.md">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
     </None>
+    <None Include="SharpWave.dll.config">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
   </ItemGroup>
   <ItemGroup>
     <Folder Include="2D\Drawing" />
diff --git a/ClassicalSharp/Particles/CollidableParticle.cs b/ClassicalSharp/Particles/CollidableParticle.cs
new file mode 100644
index 000000000..a74a04b2e
--- /dev/null
+++ b/ClassicalSharp/Particles/CollidableParticle.cs
@@ -0,0 +1,66 @@
+using System;
+using ClassicalSharp.Entities;
+using OpenTK;
+
+namespace ClassicalSharp.Particles {
+
+	public abstract class CollidableParticle : Particle {
+		
+		const float gravity = 3.4f; 
+		//const float gravity = 0.7f; // TODO: temp debug
+		
+		public CollidableParticle( Game game, Vector3 pos, Vector3 velocity, double lifetime )
+			: base( game, pos, velocity, lifetime ) {
+		}
+
+		public override bool Tick( double delta ) {
+			lastPos = Position = nextPos;
+			byte curBlock = game.World.SafeGetBlock( (int)Position.X, (int)Position.Y, (int)Position.Z );
+			if( !CanPassThrough( curBlock ) ) return true;
+			
+			Velocity.Y -= gravity * (float)delta;
+			int startY = (int)Math.Floor( Position.Y );
+			Position += Velocity * (float)delta * 3;
+			int endY = (int)Math.Floor( Position.Y );
+			Utils.Clamp( ref Position.X, 0, game.World.Width - 0.01f );
+			Utils.Clamp( ref Position.Z, 0, game.World.Length - 0.01f );
+			
+			if( Velocity.Y > 0 ) {
+				for( int y = startY; y <= endY && TestY( y, false ); y++ );
+			} else {
+				for( int y = startY; y >= endY && TestY( y, true ); y-- );
+			}
+			nextPos = Position;
+			Position = lastPos;
+			return base.Tick( delta );
+		}
+		
+		bool TestY( int y, bool topFace ) {
+			if( y < 0 ) {
+				Position.Y = nextPos.Y = lastPos.Y = 0 + Entity.Adjustment;
+				Velocity = Vector3.Zero;
+				return false;
+			}
+			
+			byte block = game.World.SafeGetBlock( (int)Position.X, y, (int)Position.Z );
+			if( CanPassThrough( block ) ) return true;
+			
+			float collideY = y;
+			if( topFace )
+				collideY += game.BlockInfo.Height[block];
+			
+			bool collide = topFace ? (Position.Y < collideY) : (Position.Y > collideY );
+			if( collide ) {
+				float adjust = topFace ? Entity.Adjustment : -Entity.Adjustment;
+				Position.Y = nextPos.Y = lastPos.Y = collideY + adjust;
+				Velocity = Vector3.Zero;
+				return false;
+			}
+			return true;
+		}
+		
+		bool CanPassThrough( byte block ) {
+			return block == 0 || game.BlockInfo.IsSprite[block] || game.BlockInfo.IsLiquid[block];
+		}
+	}
+}
diff --git a/ClassicalSharp/Particles/Particle.cs b/ClassicalSharp/Particles/Particle.cs
new file mode 100644
index 000000000..6ff57d9f9
--- /dev/null
+++ b/ClassicalSharp/Particles/Particle.cs
@@ -0,0 +1,28 @@
+using System;
+using OpenTK;
+
+namespace ClassicalSharp.Particles {
+
+	public abstract class Particle {
+		
+		public Vector3 Position;
+		public Vector3 Velocity;
+		public float Lifetime;
+		protected Game game;
+		protected Vector3 lastPos, nextPos;
+
+		public abstract void Render( double delta, float t, VertexPos3fTex2fCol4b[] vertices, ref int index );
+		
+		public Particle( Game game, Vector3 pos, Vector3 velocity, double lifetime ) {
+			this.game = game;
+			Position = lastPos = nextPos = pos;
+			Velocity = velocity;
+			Lifetime = (float)lifetime;
+		}
+		
+		public virtual bool Tick( double delta ) {
+			Lifetime -= (float)delta;
+			return Lifetime < 0;
+		}
+	}
+}
\ No newline at end of file
diff --git a/ClassicalSharp/Particles/ParticleManager.cs b/ClassicalSharp/Particles/ParticleManager.cs
new file mode 100644
index 000000000..115206830
--- /dev/null
+++ b/ClassicalSharp/Particles/ParticleManager.cs
@@ -0,0 +1,129 @@
+using System;
+using System.Collections.Generic;
+using ClassicalSharp.GraphicsAPI;
+using OpenTK;
+
+namespace ClassicalSharp.Particles {
+	
+	public class ParticleManager : IDisposable {
+		
+		public int ParticlesTexId;
+		List<Particle> terrainParticles = new List<Particle>();
+		List<Particle> rainParticles = new List<Particle>();
+		Game game;
+		Random rnd;
+		int vb;
+		
+		public ParticleManager( Game game ) {
+			this.game = game;
+			rnd = new Random();
+			vb = game.Graphics.CreateDynamicVb( VertexFormat.Pos3fTex2fCol4b, 1000 );
+		}
+		
+		VertexPos3fTex2fCol4b[] vertices = new VertexPos3fTex2fCol4b[0];
+		public void Render( double delta, float t ) {
+			if( terrainParticles.Count == 0 && rainParticles.Count == 0 ) return;
+			IGraphicsApi graphics = game.Graphics;
+			graphics.Texturing = true;
+			graphics.AlphaTest = true;
+			graphics.SetBatchFormat( VertexFormat.Pos3fTex2fCol4b );
+			
+			int count = RenderParticles( terrainParticles, delta, t );
+			if( count > 0 ) {
+				graphics.BindTexture( game.TerrainAtlas.TexId );
+				graphics.UpdateDynamicIndexedVb( DrawMode.Triangles, vb, vertices, count, count * 6 / 4 );
+			}
+			count = RenderParticles( rainParticles, delta, t );
+			if( count > 0 ) {
+				graphics.BindTexture( ParticlesTexId );
+				graphics.UpdateDynamicIndexedVb( DrawMode.Triangles, vb, vertices, count, count * 6 / 4 );
+			}
+			
+			graphics.AlphaTest = false;
+			graphics.Texturing = false;
+		}
+		
+		int RenderParticles( List<Particle> particles, double delta, float t ) {
+			int count = particles.Count * 4;
+			if( count > vertices.Length )
+				vertices = new VertexPos3fTex2fCol4b[count];
+			
+			int index = 0;
+			for( int i = 0; i < particles.Count; i++ )
+				particles[i].Render( delta, t, vertices, ref index );				
+			return Math.Min( count, 1000 );
+		}
+		
+		public void Tick( double delta ) {
+			TickParticles( terrainParticles, delta );
+			TickParticles( rainParticles, delta );
+		}
+		
+		void TickParticles( List<Particle> particles, double delta ) {
+			for( int i = 0; i < particles.Count; i++ ) {
+				Particle particle = particles[i];
+				if( particle.Tick( delta ) ) {
+					particles.RemoveAt( i );
+					i--;
+				}
+			}
+		}
+		
+		public void Dispose() {
+			game.Graphics.DeleteDynamicVb( vb );
+			game.Graphics.DeleteTexture( ref ParticlesTexId );
+		}
+		
+		public void BreakBlockEffect( Vector3I position, byte block ) {
+			Vector3 startPos = new Vector3( position.X, position.Y, position.Z );
+			int texLoc = game.BlockInfo.GetTextureLoc( block, TileSide.Left );
+			TextureRec rec = game.TerrainAtlas.GetTexRec( texLoc );
+			
+			const float invSize = TerrainAtlas2D.invElementSize;
+			const int cellsCount = (int)((1/4f) / invSize);
+			const float elemSize = invSize / 4f;
+			float blockHeight = game.BlockInfo.Height[block];
+			
+			for( int i = 0; i < 25; i++ ) {
+				double velX = rnd.NextDouble() * 0.8 - 0.4; // [-0.4, 0.4]
+				double velZ = rnd.NextDouble() * 0.8 - 0.4;
+				double velY = rnd.NextDouble() + 0.2;
+				Vector3 velocity = new Vector3( (float)velX, (float)velY, (float)velZ );
+				
+				double xOffset = rnd.NextDouble() - 0.5; // [-0.5, 0.5]
+				double yOffset = (rnd.NextDouble() - 0.125) * blockHeight;
+				double zOffset = rnd.NextDouble() - 0.5;
+				Vector3 pos = startPos + new Vector3( 0.5f + (float)xOffset,
+				                                     (float)yOffset, 0.5f + (float)zOffset );
+				
+				TextureRec particleRec = rec;
+				particleRec.U1 = rec.U1 + rnd.Next( 0, cellsCount ) * elemSize;
+				particleRec.V1 = rec.V1 + rnd.Next( 0, cellsCount ) * elemSize;
+				particleRec.U2 = particleRec.U1 + elemSize;
+				particleRec.V2 = particleRec.V1 + elemSize;
+				double life = 1.5 - rnd.NextDouble();
+				
+				terrainParticles.Add( new TerrainParticle( game, pos, velocity, life, particleRec ) );
+			}
+		}
+		
+		public void AddRainParticle( Vector3 pos ) {
+			Vector3 startPos = pos;
+			
+			for( int i = 0; i < 5; i++ ) {
+				double velX = rnd.NextDouble() * 0.8 - 0.4; // [-0.4, 0.4]
+				double velZ = rnd.NextDouble() * 0.8 - 0.4;
+				double velY = rnd.NextDouble() + 0.5;
+				Vector3 velocity = new Vector3( (float)velX, (float)velY, (float)velZ );
+				
+				double xOffset = rnd.NextDouble() - 0.5; // [-0.5, 0.5]
+				double yOffset = 0.01;
+				double zOffset = rnd.NextDouble() - 0.5;
+				pos = startPos + new Vector3( 0.5f + (float)xOffset,
+				                                     (float)yOffset, 0.5f + (float)zOffset );
+				double life = 3.5 - rnd.NextDouble();		
+				rainParticles.Add( new RainParticle( game, pos, velocity, life ) );
+			}
+		}
+	}
+}
diff --git a/ClassicalSharp/Particles/RainParticle.cs b/ClassicalSharp/Particles/RainParticle.cs
new file mode 100644
index 000000000..abfdef5f4
--- /dev/null
+++ b/ClassicalSharp/Particles/RainParticle.cs
@@ -0,0 +1,28 @@
+using System;
+using OpenTK;
+
+namespace ClassicalSharp.Particles {
+
+	public sealed class RainParticle : CollidableParticle {
+		
+		static Vector2 rainSize = new Vector2( 1/8f, 1/8f );
+		static TextureRec rec = new TextureRec( 2/128f, 14/128f, 3/128f, 2/128f );
+		public RainParticle( Game game, Vector3 pos, Vector3 velocity, double lifetime )
+			: base( game, pos, velocity, lifetime ) {
+		}
+		
+		public override void Render( double delta, float t, VertexPos3fTex2fCol4b[] vertices, ref int index ) {
+			Position = Vector3.Lerp( lastPos, nextPos, t );
+			Vector3 p111, p121, p212, p222;
+			Utils.CalcBillboardPoints( rainSize, Position, ref game.View,
+			                          out p111, out p121, out p212, out p222 );
+			World map = game.World;
+			FastColour col = map.IsLit( Vector3I.Floor( Position ) ) ? map.Sunlight : map.Shadowlight;
+			
+			vertices[index++] = new VertexPos3fTex2fCol4b( p111, rec.U1, rec.V2, col );
+			vertices[index++] = new VertexPos3fTex2fCol4b( p121, rec.U1, rec.V1, col );
+			vertices[index++] = new VertexPos3fTex2fCol4b( p222, rec.U2, rec.V1, col );
+			vertices[index++] = new VertexPos3fTex2fCol4b( p212, rec.U2, rec.V2, col );
+		}
+	}
+}
diff --git a/ClassicalSharp/Particles/TerrainParticle.cs b/ClassicalSharp/Particles/TerrainParticle.cs
new file mode 100644
index 000000000..2ec081577
--- /dev/null
+++ b/ClassicalSharp/Particles/TerrainParticle.cs
@@ -0,0 +1,29 @@
+using System;
+using OpenTK;
+
+namespace ClassicalSharp.Particles {
+
+	public sealed class TerrainParticle : CollidableParticle {
+		
+		static Vector2 terrainSize = new Vector2( 1/8f, 1/8f );
+		TextureRec rec;
+		public TerrainParticle( Game game, Vector3 pos, Vector3 velocity, double lifetime, TextureRec rec )
+			: base( game, pos, velocity, lifetime ) {
+			this.rec = rec;
+		}
+		
+		public override void Render( double delta, float t, VertexPos3fTex2fCol4b[] vertices, ref int index ) {
+			Position = Vector3.Lerp( lastPos, nextPos, t );
+			Vector3 p111, p121, p212, p222;
+			Utils.CalcBillboardPoints( terrainSize, Position, ref game.View,
+			                          out p111, out p121, out p212, out p222 );
+			World map = game.World;
+			FastColour col = map.IsLit( Vector3I.Floor( Position ) ) ? map.Sunlight : map.Shadowlight;
+			
+			vertices[index++] = new VertexPos3fTex2fCol4b( p111, rec.U1, rec.V2, col );
+			vertices[index++] = new VertexPos3fTex2fCol4b( p121, rec.U1, rec.V1, col );
+			vertices[index++] = new VertexPos3fTex2fCol4b( p222, rec.U2, rec.V1, col );
+			vertices[index++] = new VertexPos3fTex2fCol4b( p212, rec.U2, rec.V2, col );
+		}
+	}
+}
diff --git a/ClassicalSharp/SharpWave.dll b/ClassicalSharp/SharpWave.dll
new file mode 100644
index 000000000..021aa796b
Binary files /dev/null and b/ClassicalSharp/SharpWave.dll differ
diff --git a/ClassicalSharp/SharpWave.dll.config b/ClassicalSharp/SharpWave.dll.config
new file mode 100644
index 000000000..a4e4f7b60
--- /dev/null
+++ b/ClassicalSharp/SharpWave.dll.config
@@ -0,0 +1,4 @@
+<configuration>
+  <dllmap os="linux" dll="openal32.dll" target="libopenal.so.1"/>
+  <dllmap os="osx" dll="openal32.dll" target="/System/Library/Frameworks/OpenAL.framework/OpenAL" />
+</configuration>
diff --git a/Launcher2/Gui/Screens/ResourcesScreen.cs b/Launcher2/Gui/Screens/ResourcesScreen.cs
index d58eef229..b1681a077 100644
--- a/Launcher2/Gui/Screens/ResourcesScreen.cs
+++ b/Launcher2/Gui/Screens/ResourcesScreen.cs
@@ -48,10 +48,9 @@ namespace Launcher2 {
 				game.Downloader = new AsyncDownloader( "null" );
 			if( fetcher != null ) return;
 			
-			fetcher = new ResourceFetcher( game.Downloader );
-			fetcher.DownloadItems( SetStatus );
-			selectedWidget = null;
-			
+			fetcher = game.fetcher;
+			fetcher.DownloadItems( game.Downloader, SetStatus );
+			selectedWidget = null;			
 			Resize();
 		}
 		
@@ -59,7 +58,7 @@ namespace Launcher2 {
 		static FastColour backCol = new FastColour( 120, 85, 151 );
 		static readonly string mainText = "Some required resources weren't found" +
 			Environment.NewLine + "Okay to download them?";
-		static readonly string format = "Estimated size: {0} megabytes";
+		static readonly string format = "Download size: {0} megabytes";
 		static FastColour clearCol = new FastColour( 12, 12, 12 );
 		
 		void Draw() {
@@ -68,8 +67,9 @@ namespace Launcher2 {
 			drawer.DrawRect( backCol, game.Width / 2 - 175,
 			                game.Height / 2 - 70, 175 * 2, 70 * 2 );
 			
+			float dataSize = game.fetcher.DownloadSize;
 			string text = widgets[0] != null ? widgets[0].Text
-				: String.Format( format, ResourceFetcher.EstimateDownloadSize() );
+				: String.Format( format, dataSize.ToString( "F2" ) );
 			MakeLabelAt( text, statusFont, Anchor.Centre, Anchor.Centre, 0, 5 );
 
 			// Clear the entire previous widgets state.
diff --git a/Launcher2/Launcher2.csproj b/Launcher2/Launcher2.csproj
index 9b9fba424..2849587f0 100644
--- a/Launcher2/Launcher2.csproj
+++ b/Launcher2/Launcher2.csproj
@@ -45,6 +45,9 @@
     <BaseIntermediateOutputPath>obj\</BaseIntermediateOutputPath>
   </PropertyGroup>
   <ItemGroup>
+    <Reference Include="SharpWave">
+      <HintPath>..\ClassicalSharp\SharpWave.dll</HintPath>
+    </Reference>
     <Reference Include="System" />
     <Reference Include="System.Drawing" />
     <Reference Include="System.Security" />
@@ -72,6 +75,7 @@
     <Compile Include="Patcher\Animations.cs" />
     <Compile Include="Patcher\ResourceFetcher.cs" />
     <Compile Include="Patcher\ResourcePatcher.cs" />
+    <Compile Include="Patcher\SoundPatcher.cs" />
     <Compile Include="Patcher\ZipWriter.cs" />
     <Compile Include="Program.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
diff --git a/Launcher2/LauncherWindow.cs b/Launcher2/LauncherWindow.cs
index cd186110d..7ac4c3436 100644
--- a/Launcher2/LauncherWindow.cs
+++ b/Launcher2/LauncherWindow.cs
@@ -48,6 +48,8 @@ namespace Launcher2 {
 		public Dictionary<string, Dictionary<string, object>> ScreenMetadata =
 			new Dictionary<string, Dictionary<string, object>>();
 		
+		internal ResourceFetcher fetcher;
+		
 		Font logoFont, logoItalicFont;
 		PlatformDrawer platformDrawer;
 		public void Init() {
@@ -120,7 +122,9 @@ namespace Launcher2 {
 			TryLoadTexturePack();
 			platformDrawer.Init( Window.WindowInfo );
 			
-			if( !ResourceFetcher.CheckAllResourcesExist() ) {
+			fetcher = new ResourceFetcher();
+			fetcher.CheckResourceExistence();
+			if( !fetcher.AllResourcesExist ) {
 				SetScreen( new ResourcesScreen( this ) );
 			} else {
 				SetScreen( new MainScreen( this ) );
diff --git a/Launcher2/Patcher/ResourceFetcher.cs b/Launcher2/Patcher/ResourceFetcher.cs
index f6a884e4b..0c519e588 100644
--- a/Launcher2/Patcher/ResourceFetcher.cs
+++ b/Launcher2/Patcher/ResourceFetcher.cs
@@ -7,17 +7,22 @@ namespace Launcher2 {
 	public sealed class ResourceFetcher {
 		
 		public bool Done = false;
-		AsyncDownloader downloader;
-		public ResourceFetcher( AsyncDownloader downloader ) {
-			this.downloader = downloader;
+		internal AsyncDownloader downloader;
+		public ResourceFetcher() {
+			digPath = Path.Combine( "audio", "dig" );
+			stepPath = Path.Combine( "audio", "step" );
 		}
 		
 		const string jarClassicUri = "http://s3.amazonaws.com/Minecraft.Download/versions/c0.30_01c/c0.30_01c.jar";
 		const string jar162Uri = "http://s3.amazonaws.com/Minecraft.Download/versions/1.6.2/1.6.2.jar";
 		const string pngTerrainPatchUri = "http://static.classicube.net/terrain-patch.png";
 		const string pngGuiPatchUri = "http://static.classicube.net/gui.png";
+		const string digSoundsUri = "http://s3.amazonaws.com/MinecraftResources/sound3/dig/";
+		const string stepSoundsUri = "http://s3.amazonaws.com/MinecraftResources/sound3/step/";
+		const string musicUri = "http://s3.amazonaws.com/MinecraftResources/music/";
 		
-		public void DownloadItems( Action<string> setStatus ) {
+		public void DownloadItems( AsyncDownloader downloader, Action<string> setStatus ) {
+			this.downloader = downloader;
 			downloader.DownloadData( jarClassicUri, false, "classic_jar" );
 			downloader.DownloadData( jar162Uri, false, "162_jar" );
 			downloader.DownloadData( pngTerrainPatchUri, false, "terrain_patch" );
@@ -69,14 +74,50 @@ namespace Launcher2 {
 			return true;
 		}
 		
-		public static bool CheckAllResourcesExist() {
-			return File.Exists( "default.zip" );
+		public void CheckResourceExistence() {
+			AllResourcesExist = File.Exists( "default.zip" );
+				//&& Directory.Exists( "audio" ) && File.Exists( digPath + ".bin" )
+				//&& File.Exists( stepPath + ".bin" );
+			
+			if( !File.Exists( "default.zip" ) ) {
+				// classic.jar + 1.6.2.jar + terrain-patch.png + gui.png
+				DownloadSize += (291 + 4621 + 7 + 21) / 1024f;
+				ResourcesCount += 4;
+			}
+			
+			for( int i = 0; i < musicFiles.Length; i++ ) {
+				string file = Path.Combine( "audio", musicFiles[i] + ".ogg" );
+				musicExists[i] = File.Exists( file );
+				continue;
+				// TODO: download music files
+				if( !musicExists[i] ) {
+					DownloadSize += musicSizes[i] / 1024f;
+					ResourcesCount++;
+				}
+			}
+			ResourcesCount += digSounds.Length;
+			ResourcesCount += stepSounds.Length;
 		}
+		public bool AllResourcesExist;
+		public float DownloadSize;
+		public int ResourcesCount;
 		
-		public static string EstimateDownloadSize() {
-			float size = (291 + 4621 + 7 + 21) / 1024f;
-			// classic.jar + 1.6.2.jar + terrain-patch.png + gui.png
-			return size.ToString( "F2" );
-		}
+		string digPath, stepPath;
+		string[] digSounds = new [] { "cloth1", "cloth2", "cloth3", "cloth4", 
+			"glass1", "glass2", "glass3", "glass4", "grass1", "grass2", "grass3", 
+			"grass4", "gravel1", "gravel2", "gravel3", "gravel4", "sand1", "sand2", 
+			"sand3", "sand4", "snow1", "snow2", "snow3", "snow4", "stone1", "stone2", 
+			"stone3", "stone4", "wood1", "wood2", "wood3", "wood4" };
+		
+		string[] stepSounds = new [] { "cloth1", "cloth2", "cloth3", "cloth4", "grass1", 
+			"grass2", "grass3", "grass4", "grass5", "grass6", "gravel1", "gravel2", 
+			"gravel3", "gravel4", "sand1", "sand2", "sand3", "sand4", "sand5", "snow1", 
+			"snow2", "snow3", "snow4", "stone1", "stone2", "stone3", "stone4", "stone5", 
+			"stone6", "wood1", "wood2", "wood3", "wood4", "wood5", "wood6" };
+		
+		string[] musicFiles = new [] { "calm1", "calm2", 
+			"calm3", "hal1", "hal2", "hal3" };
+		int[] musicSizes = new [] { 2472, 1931, 2181, 1926, 1714, 1879, 2499 };
+		bool[] musicExists = new bool[6];
 	}
 }
diff --git a/Launcher2/Patcher/SoundPatcher.cs b/Launcher2/Patcher/SoundPatcher.cs
new file mode 100644
index 000000000..3596610d3
--- /dev/null
+++ b/Launcher2/Patcher/SoundPatcher.cs
@@ -0,0 +1,88 @@
+using System;
+using System.IO;
+using ClassicalSharp.Network;
+using SharpWave;
+using SharpWave.Codecs;
+using SharpWave.Codecs.Vorbis;
+using SharpWave.Containers;
+
+namespace Launcher2 {
+	
+	public sealed class SoundPatcher {
+
+		string[] files, identifiers;
+		string prefix;
+		FileStream outData;
+		StreamWriter outText;
+		RawOut outDecoder;
+		
+		public SoundPatcher( string[] files, string prefix, string outputPath ) {
+			this.files = files;
+			this.prefix = prefix;
+			InitOutput( outputPath );
+		}
+		
+		public void FetchFiles( string baseUrl, ResourceFetcher fetcher ) {
+			identifiers = new string[files.Length];
+			for( int i = 0; i < files.Length; i++ )
+				identifiers[i] = prefix + files[i];
+			
+			for( int i = 0; i < files.Length; i++ ) {
+				string url = baseUrl + files[i] + ".ogg";
+				fetcher.downloader.DownloadData( url, false, identifiers[i] );
+			}
+		}
+		
+		public bool CheckDownloaded( ResourceFetcher fetcher, Action<string> setStatus ) {
+			for( int i = 0; i < identifiers.Length; i++ ) {
+				DownloadedItem item;
+				if( fetcher.downloader.TryGetItem( identifiers[i], out item ) ) {
+					Console.WriteLine( "found sound " + identifiers[i] );
+					if( item.Data == null ) {
+						setStatus( "&cFailed to download " + identifiers[i] );
+						return false;
+					}
+					DecodeSound( files[i], (byte[])item.Data );
+					
+					// TODO: setStatus( next );
+					if( i == identifiers.Length - 1 ) {
+						Dispose();
+					}
+				}
+			}
+			return true;
+		}
+		
+		void DecodeSound( string name, byte[] rawData ) {
+			long start = outData.Position;
+			using( MemoryStream ms = new MemoryStream( rawData ) ) {
+				OggContainer container = new OggContainer( ms );
+				outDecoder.PlayStreaming( container );
+			}
+			
+			long len = outData.Position - start;
+			outText.WriteLine( format, name, outDecoder.Frequency,
+			                  outDecoder.BitsPerSample, outDecoder.Channels,
+			                  start, len );
+		}
+		
+		const string format = "{0},{1},{2},{3},{4},{5}";
+		void InitOutput( string outputPath ) {
+			outData = File.Create( outputPath + ".bin" );
+			outText = new StreamWriter( outputPath + ".txt" );
+			outDecoder = new RawOut( outData, true );
+			
+			outText.WriteLine( "# This file indicates where the various raw decompressed sound data " +
+			                  "are found in the corresponding raw .bin file." );
+			outText.WriteLine( "# Each line is in the following format:" );
+			outText.WriteLine( "# Identifier, Frequency/Sample rate, BitsPerSample, " +
+			                  "Channels, Offset from start, Length in bytes" );
+		}
+		
+		void Dispose() {
+			outDecoder.Dispose();
+			outData.Close();
+			outText.Close();
+		}
+	}
+}