diff --git a/visualc/dosbox.dsp b/visualc/dosbox.dsp
index f441b904..e6fa1064 100644
--- a/visualc/dosbox.dsp
+++ b/visualc/dosbox.dsp
@@ -1,24 +1,24 @@
 # Microsoft Developer Studio Project File - Name="dosbox" - Package Owner=<4>
 # Microsoft Developer Studio Generated Build File, Format Version 6.00
-# ** NICHT BEARBEITEN **
+# ** DO NOT EDIT **
 
 # TARGTYPE "Win32 (x86) Console Application" 0x0103
 
 CFG=dosbox - Win32 Debug
-!MESSAGE Dies ist kein gültiges Makefile. Zum Erstellen dieses Projekts mit NMAKE
-!MESSAGE verwenden Sie den Befehl "Makefile exportieren" und führen Sie den Befehl
+!MESSAGE This is not a valid makefile. To build this project using NMAKE,
+!MESSAGE use the Export Makefile command and run
 !MESSAGE 
 !MESSAGE NMAKE /f "dosbox.mak".
 !MESSAGE 
-!MESSAGE Sie können beim Ausführen von NMAKE eine Konfiguration angeben
-!MESSAGE durch Definieren des Makros CFG in der Befehlszeile. Zum Beispiel:
+!MESSAGE You can specify a configuration when running NMAKE
+!MESSAGE by defining the macro CFG on the command line. For example:
 !MESSAGE 
 !MESSAGE NMAKE /f "dosbox.mak" CFG="dosbox - Win32 Debug"
 !MESSAGE 
-!MESSAGE Für die Konfiguration stehen zur Auswahl:
+!MESSAGE Possible choices for configuration are:
 !MESSAGE 
-!MESSAGE "dosbox - Win32 Release" (basierend auf  "Win32 (x86) Console Application")
-!MESSAGE "dosbox - Win32 Debug" (basierend auf  "Win32 (x86) Console Application")
+!MESSAGE "dosbox - Win32 Release" (based on "Win32 (x86) Console Application")
+!MESSAGE "dosbox - Win32 Debug" (based on "Win32 (x86) Console Application")
 !MESSAGE 
 
 # Begin Project
@@ -50,7 +50,7 @@ BSC32=bscmake.exe
 # ADD BSC32 /nologo
 LINK32=link.exe
 # ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /machine:I386
-# ADD LINK32 zlib.lib libpng.lib sdlmain.lib sdl.lib curses.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /machine:I386
+# ADD LINK32 winmm.lib zlib.lib libpng.lib sdlmain.lib sdl.lib curses.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /machine:I386
 
 !ELSEIF  "$(CFG)" == "dosbox - Win32 Debug"
 
@@ -75,7 +75,7 @@ BSC32=bscmake.exe
 # ADD BSC32 /nologo
 LINK32=link.exe
 # ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
-# ADD LINK32 zlib.lib libpng.lib sdlmain.lib sdl.lib curses.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
+# ADD LINK32 winmm.lib zlib.lib libpng.lib sdlmain.lib sdl.lib curses.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
 
 !ENDIF 
 
@@ -267,6 +267,14 @@ SOURCE=..\src\dos\dos_tables.cpp
 # PROP Default_Filter ""
 # Begin Source File
 
+SOURCE=..\src\gui\midi.cpp
+# End Source File
+# Begin Source File
+
+SOURCE=..\src\gui\midi_win32.h
+# End Source File
+# Begin Source File
+
 SOURCE=..\src\gui\render.cpp
 # End Source File
 # Begin Source File
@@ -387,6 +395,10 @@ SOURCE=..\src\hardware\mixer.cpp
 # End Source File
 # Begin Source File
 
+SOURCE=..\src\hardware\mpu401.cpp
+# End Source File
+# Begin Source File
+
 SOURCE=..\src\hardware\pcspeaker.cpp
 # End Source File
 # Begin Source File