diff --git a/.gitignore b/.gitignore
index 77cf21f..0e6b0e2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -262,3 +262,4 @@ __pycache__/
 /Ida
 /Export
 /DrMem
+/Doc private
diff --git a/Doc/FuncStats.xlsx b/Doc/FuncStats.xlsx
index 44a23b5..fb21803 100644
Binary files a/Doc/FuncStats.xlsx and b/Doc/FuncStats.xlsx differ
diff --git a/SpaceCadetPinball/Sound.cpp b/SpaceCadetPinball/Sound.cpp
index c7c3b38..6097d31 100644
--- a/SpaceCadetPinball/Sound.cpp
+++ b/SpaceCadetPinball/Sound.cpp
@@ -1,33 +1,146 @@
 #include "pch.h"
 #include "Sound.h"
 
-int Sound::Init(HINSTANCE hInstance, int voices, void (__stdcall* someFuncPtr)(int, int, int))
+#include "pinball.h"
+#include "WaveMix.h"
+#include "winmain.h"
+
+int Sound::num_channels;
+HWND Sound::wavemix_window;
+HANDLE Sound::pMem;
+unsigned int Sound::enabled_flag;
+int Sound::channel_time[8];
+MIXWAVE* Sound::channel_wavePtr[8];
+void (*Sound::callback_ptr)(int, MIXWAVE*, int);
+HMODULE Sound::HInstance;
+
+
+int Sound::Init(HINSTANCE hInstance, int voices, void (* someFuncPtr)(int, MIXWAVE*, int))
 {
+	WNDCLASSA WndClass;
+	char FileName[300];
+
+	int channelCount = voices;
+	if (voices > 8)
+		channelCount = 8;
+	num_channels = channelCount;
+	if (wavemix_window || pMem)
+		return 0;
+	enabled_flag = -1;
+	for (int i = 0; i < channelCount; ++i)
+	{
+		channel_time[i] = 0;
+		channel_wavePtr[i] = nullptr;
+	}
+	callback_ptr = someFuncPtr;
+	if (!someFuncPtr)
+		callback_ptr = NullCallback;
+
+	pinball::make_path_name(FileName, "wavemix.inf", 300);
+	FILE* wavemixIniFile = nullptr;
+	fopen_s(&wavemixIniFile, FileName, "r");
+	if (wavemixIniFile)
+	{
+		fclose(wavemixIniFile);
+	}
+	else
+	{
+		MessageBoxA(winmain::hwnd_frame, pinball::get_rc_string(42, 0), pinball::WindowName, 0x2000u);
+	}
+
+	WndClass.style = 0;
+	WndClass.lpfnWndProc = SoundCallBackWndProc;
+	WndClass.cbClsExtra = 0;
+	WndClass.cbWndExtra = 0;
+	WndClass.hInstance = hInstance;
+	WndClass.hIcon = nullptr;
+	WndClass.hCursor = nullptr;
+	WndClass.hbrBackground = nullptr;
+	WndClass.lpszMenuName = nullptr;
+	WndClass.lpszClassName = "WaveMixSoundGuy";
+	RegisterClassA(&WndClass);
+	wavemix_window = CreateWindowExA(
+		0,
+		"WaveMixSoundGuy",
+		nullptr,
+		0x80000000,
+		0x80000000,
+		0,
+		0x80000000,
+		0,
+		nullptr,
+		nullptr,
+		hInstance,
+		nullptr);
+	if (!wavemix_window)
+		return 0;
+
+	HInstance = hInstance;
+	HANDLE hMixSession = WaveMix::Init();
+	pMem = hMixSession;
+	if (!hMixSession)
+		return 0;
+	WaveMix::OpenChannel(hMixSession, num_channels, 2u);
 	return 1;
 }
 
-void Sound::Enable(int a1, int a2, int a3)
+void Sound::Enable(int channelFrom, int channelTo, int enableFlag)
 {
-}
+	if (pMem)
+	{
+		if (channelTo >= num_channels)
+			channelTo = num_channels - 1;
 
-void Sound::nullsub_1(int a1, int a2, int a3)
-{
+		if (channelFrom >= 0 && channelTo < num_channels)
+		{
+			for (int index = channelFrom; index <= channelTo; ++index)
+			{
+				int channelFlag = 1 << index;
+				if (enableFlag)
+				{
+					enabled_flag |= channelFlag;
+				}
+				else
+				{
+					enabled_flag &= ~channelFlag;
+					Flush(index, index);
+				}
+			}
+		}
+	}
 }
 
 void Sound::Idle()
 {
+	if (pMem)
+		WaveMix::Pump();
 }
 
 void Sound::Activate()
 {
+	if (pMem)
+		WaveMix::Activate(pMem, true);
 }
 
 void Sound::Deactivate()
 {
+	if (pMem)
+		WaveMix::Activate(pMem, false);
 }
 
 void Sound::Close()
 {
+	if (wavemix_window)
+	{
+		DestroyWindow(wavemix_window);
+		wavemix_window = nullptr;
+	}
+	if (pMem)
+	{
+		WaveMix::CloseChannel(pMem, 0, 1);
+		WaveMix::CloseSession(pMem);
+		pMem = nullptr;
+	}
 }
 
 int Sound::SubFactor(int a1, int a2)
@@ -40,16 +153,124 @@ int Sound::AddFactor(int a1, int a2)
 	return a1 + a2;
 }
 
-void Sound::PlaySoundA(int a1, int a2, int a3, unsigned short a4, short a5)
+void Sound::PlaySound(MIXWAVE* wavePtr, int minChannel, int maxChannel, unsigned int dwFlags, __int16 loops)
+{
+	MIXPLAYPARAMS mixParams{};
+
+	if (!pMem)
+		return;
+
+	if (maxChannel >= num_channels)
+		maxChannel = num_channels - 1;
+	if (!wavePtr || minChannel < 0 || maxChannel >= num_channels)
+		return;
+
+	if ((dwFlags & 0x8000) != 0 && num_channels > 0)
+	{
+		int index2 = 0;
+		bool ok = false;
+		while (channel_wavePtr[index2] != wavePtr)
+		{
+			if (++index2 >= num_channels)
+			{
+				ok = true;
+				break;
+			}
+		}
+		if (!ok)
+			return;
+	}
+
+
+	int playChannel = minChannel;
+	if (minChannel < maxChannel)
+	{
+		int curChannel = minChannel;
+		do
+		{
+			++curChannel;
+			if ((1 << curChannel) & enabled_flag &&
+				channel_time[curChannel] < channel_time[playChannel])
+			{
+				playChannel = curChannel;
+			}
+		}
+		while (curChannel < maxChannel);
+	}
+
+	if ((1 << playChannel) & enabled_flag)
+	{
+		mixParams.hMixSession = pMem;
+		mixParams.hWndNotify = wavemix_window;
+		mixParams.dwFlags = dwFlags;
+		mixParams.wSize = 28;
+		mixParams.wLoops = loops;
+		mixParams.iChannel = playChannel;
+		mixParams.lpMixWave = wavePtr;
+
+		callback_ptr(1, wavePtr, playChannel);
+		channel_time[playChannel] = timeGetTime();
+		channel_wavePtr[playChannel] = wavePtr;
+		WaveMix::Play(&mixParams);
+	}
+}
+
+MIXWAVE* Sound::LoadWaveFile(LPCSTR lpName)
+{
+	return pMem ? WaveMix::OpenWave(pMem, lpName, HInstance, 1u) : nullptr;
+}
+
+void Sound::FreeSound(MIXWAVE* wave)
+{
+	if (wave && pMem)
+		WaveMix::FreeWave(pMem, wave);
+}
+
+void Sound::Flush(int channelFrom, int channelTo)
+{
+	if (pMem)
+	{
+		if (channelTo >= num_channels)
+			channelTo = num_channels - 1;
+
+		if (channelFrom >= 0 && channelTo < num_channels)
+		{
+			for (auto index = channelFrom; index <= channelTo; index++)
+			{
+				WaveMix::FlushChannel(pMem, index, 0);
+				channel_time[index] = 0;
+				channel_wavePtr[index] = nullptr;
+			}
+		}
+	}
+}
+
+void Sound::NullCallback(int a1, MIXWAVE* a2, int a3)
 {
 }
 
-CHAR* Sound::LoadWaveFile(LPCSTR lpName)
+LRESULT Sound::SoundCallBackWndProc(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam)
 {
-	return nullptr;
-}
+	if (Msg != 957)
+		return DefWindowProcA(hWnd, Msg, wParam, lParam);
 
-LPCVOID Sound::FreeSound(LPCVOID pMem)
-{
-	return nullptr;
+	auto wavePtr = reinterpret_cast<MIXWAVE*>(lParam);
+	int channel = -1;
+	for (auto index = 0; index < num_channels; ++index)
+	{
+		if (channel_wavePtr[index] == wavePtr &&
+			(channel < 0 || channel_time[index] < channel_time[channel]))
+		{
+			channel = index;
+		}
+	}
+
+	if (channel >= 0)
+	{
+		channel_time[channel] = 0;
+		channel_wavePtr[channel] = nullptr;
+	}
+
+	callback_ptr(2, wavePtr, channel);
+	return 0;
 }
diff --git a/SpaceCadetPinball/Sound.h b/SpaceCadetPinball/Sound.h
index 00951bc..5eea4dd 100644
--- a/SpaceCadetPinball/Sound.h
+++ b/SpaceCadetPinball/Sound.h
@@ -1,17 +1,30 @@
 #pragma once
+#include "WaveMix.h"
+
 class Sound
 {
 public:
-	static int Init(HINSTANCE hInstance, int voices, void (__stdcall* someFuncPtr)(int, int, int));
-	static void Enable(int a1, int a2, int a3);
-	static void nullsub_1(int a1, int a2, int a3);
+	static int Init(HINSTANCE hInstance, int voices, void (* someFuncPtr)(int, MIXWAVE*, int));
+	static void Enable(int channelFrom, int channelTo, int enableFlag);
 	static void Idle();
 	static void Activate();
 	static void Deactivate();
 	static void Close();
 	static int SubFactor(int a1, int a2);
 	static int AddFactor(int a1, int a2);
-	static void PlaySound(int a1, int a2, int a3, unsigned __int16 a4, __int16 a5);
-	static CHAR* LoadWaveFile(LPCSTR lpName);
-	static LPCVOID FreeSound(LPCVOID pMem);
+	static void PlaySound(MIXWAVE* wavePtr, int minChannel, int maxChannel, unsigned int dwFlags, __int16 loops);
+	static MIXWAVE* LoadWaveFile(LPCSTR lpName);
+	static void FreeSound(MIXWAVE* wave);
+	static void Flush(int channelFrom, int channelTo);
+	static void NullCallback(int a1, MIXWAVE* a2, int a3);
+	static LRESULT __stdcall SoundCallBackWndProc(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam);
+private:
+	static int num_channels;
+	static HWND wavemix_window;
+	static HANDLE pMem;
+	static unsigned int enabled_flag;
+	static int channel_time[8];
+	static MIXWAVE* channel_wavePtr[8];
+	static void (* callback_ptr)(int, MIXWAVE*, int);
+	static HMODULE HInstance;
 };
diff --git a/SpaceCadetPinball/SpaceCadetPinball.vcxproj b/SpaceCadetPinball/SpaceCadetPinball.vcxproj
index 87e3db8..170af74 100644
--- a/SpaceCadetPinball/SpaceCadetPinball.vcxproj
+++ b/SpaceCadetPinball/SpaceCadetPinball.vcxproj
@@ -217,6 +217,7 @@
     <ClInclude Include="TTripwire.h" />
     <ClInclude Include="TWall.h" />
     <ClInclude Include="TZmapList.h" />
+    <ClInclude Include="WaveMix.h" />
     <ClInclude Include="winmain.h" />
     <ClInclude Include="zdrv.h" />
   </ItemGroup>
@@ -286,6 +287,7 @@
     <ClCompile Include="TTimer.cpp" />
     <ClCompile Include="TTripwire.cpp" />
     <ClCompile Include="TWall.cpp" />
+    <ClCompile Include="WaveMix.cpp" />
     <ClCompile Include="winmain.cpp" />
     <ClCompile Include="zdrv.cpp" />
   </ItemGroup>
diff --git a/SpaceCadetPinball/SpaceCadetPinball.vcxproj.filters b/SpaceCadetPinball/SpaceCadetPinball.vcxproj.filters
index 7317e0e..6fcaf37 100644
--- a/SpaceCadetPinball/SpaceCadetPinball.vcxproj.filters
+++ b/SpaceCadetPinball/SpaceCadetPinball.vcxproj.filters
@@ -222,6 +222,9 @@
     <ClInclude Include="TFlipperEdge.h">
       <Filter>Header Files\TEdgeSegment</Filter>
     </ClInclude>
+    <ClInclude Include="WaveMix.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="pch.cpp">
@@ -410,6 +413,9 @@
     <ClCompile Include="TFlipperEdge.cpp">
       <Filter>Source Files\TEdgeSegment</Filter>
     </ClCompile>
+    <ClCompile Include="WaveMix.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <Natvis Include="NatvisFile.natvis" />
diff --git a/SpaceCadetPinball/WaveMix.cpp b/SpaceCadetPinball/WaveMix.cpp
new file mode 100644
index 0000000..8af1ff6
--- /dev/null
+++ b/SpaceCadetPinball/WaveMix.cpp
@@ -0,0 +1,51 @@
+#include "pch.h"
+#include "WaveMix.h"
+
+HANDLE WaveMix::Init()
+{
+	return (HANDLE)1;
+}
+
+int WaveMix::CloseSession(HANDLE hMixSession)
+{
+	return 0;
+}
+
+int WaveMix::OpenChannel(HANDLE hMixSession, int iChannel, unsigned dwFlags)
+{
+	return 0;
+}
+
+int WaveMix::CloseChannel(HANDLE hMixSession, int iChannel, unsigned dwFlags)
+{
+	return 0;
+}
+
+int WaveMix::FlushChannel(HANDLE hMixSession, int iChannel, unsigned dwFlags)
+{
+	return 0;
+}
+
+MIXWAVE* WaveMix::OpenWave(HANDLE hMixSession, LPCSTR szWaveFilename, HINSTANCE hInst, unsigned dwFlags)
+{
+	return new MIXWAVE{};
+}
+
+int WaveMix::FreeWave(HANDLE hMixSession, MIXWAVE* lpMixWave)
+{
+	return 0;
+}
+
+int WaveMix::Activate(HANDLE hMixSession, bool fActivate)
+{
+	return 0;
+}
+
+void WaveMix::Pump()
+{
+}
+
+int WaveMix::Play(MIXPLAYPARAMS* lpMixPlayParams)
+{
+	return 0;
+}
diff --git a/SpaceCadetPinball/WaveMix.h b/SpaceCadetPinball/WaveMix.h
new file mode 100644
index 0000000..38f028f
--- /dev/null
+++ b/SpaceCadetPinball/WaveMix.h
@@ -0,0 +1,44 @@
+#pragma once
+
+/* flag values for play params */
+#define WMIX_QUEUEWAVE 0x00
+#define WMIX_CLEARQUEUE  0x01
+#define WMIX_USELRUCHANNEL 0x02
+#define WMIX_HIPRIORITY 0x04
+#define WMIX_WAIT 0x08
+
+#define MAXCHANNELS 16
+
+struct MIXWAVE
+{
+	PCMWAVEFORMAT pcm;
+	WAVEHDR wh;
+	char szWaveFilename[16];
+	short Unknown0;
+};
+
+struct MIXPLAYPARAMS
+{
+	WORD wSize;
+	HANDLE hMixSession;
+	int iChannel;
+	MIXWAVE* lpMixWave;
+	HWND hWndNotify;
+	DWORD dwFlags;
+	WORD wLoops;
+};
+
+class WaveMix
+{
+public:
+	static HANDLE Init();
+	static int CloseSession(HANDLE hMixSession);
+	static int OpenChannel(HANDLE hMixSession, int iChannel, unsigned int dwFlags);
+	static int CloseChannel(HANDLE hMixSession, int iChannel, unsigned int dwFlags);
+	static int FlushChannel(HANDLE hMixSession, int iChannel, unsigned int dwFlags);
+	static MIXWAVE* OpenWave(HANDLE hMixSession, LPCSTR szWaveFilename, HINSTANCE hInst, unsigned int dwFlags);
+	static int FreeWave(HANDLE hMixSession, MIXWAVE* lpMixWave);
+	static int Activate(HANDLE hMixSession, bool fActivate);
+	static void Pump();
+	static int Play(MIXPLAYPARAMS* lpMixPlayParams);
+};
diff --git a/SpaceCadetPinball/loader.cpp b/SpaceCadetPinball/loader.cpp
index 8e0b581..7f1a0f9 100644
--- a/SpaceCadetPinball/loader.cpp
+++ b/SpaceCadetPinball/loader.cpp
@@ -325,7 +325,7 @@ float loader::play_sound(int soundIndex)
 {
 	if (soundIndex <= 0)
 		return 0.0;
-	Sound::PlaySound((int)sound_list[soundIndex].WavePtr, 0, 7, 5, 0);
+	Sound::PlaySound(sound_list[soundIndex].WavePtr, 0, 7, WMIX_HIPRIORITY | WMIX_CLEARQUEUE, 0);
 	return sound_list[soundIndex].Duration;
 }
 
diff --git a/SpaceCadetPinball/loader.h b/SpaceCadetPinball/loader.h
index b8e6ba7..0c24529 100644
--- a/SpaceCadetPinball/loader.h
+++ b/SpaceCadetPinball/loader.h
@@ -1,6 +1,7 @@
 #pragma once
 #include "gdrv.h"
 #include "maths.h"
+#include "WaveMix.h"
 #include "zdrv.h"
 
 
@@ -14,7 +15,7 @@ struct errorMsg
 
 struct soundListStruct
 {
-	char* WavePtr;
+	MIXWAVE* WavePtr;
 	int GroupIndex;
 	int Loaded;
 	float Duration;
diff --git a/SpaceCadetPinball/pch.h b/SpaceCadetPinball/pch.h
index e0ebb64..7c74e54 100644
--- a/SpaceCadetPinball/pch.h
+++ b/SpaceCadetPinball/pch.h
@@ -19,7 +19,10 @@
 #include <type_traits> /*For control template*/
 //#include <cstdlib>
 
-// Use (void) to silent unused warnings.
+/*Use (void) to silent unused warnings.*/
 #define assertm(exp, msg) assert(((void)msg, exp))
 
+/*Sound uses PlaySound*/
+#undef PlaySound
+
 #endif //PCH_H