diff --git a/source/SoundStretch/soundstretch.vcxproj b/source/SoundStretch/soundstretch.vcxproj
index 86308e9..c0bbc22 100644
--- a/source/SoundStretch/soundstretch.vcxproj
+++ b/source/SoundStretch/soundstretch.vcxproj
@@ -117,6 +117,7 @@
       <DebugInformationFormat>EditAndContinue</DebugInformationFormat>
       <CompileAs>Default</CompileAs>
       <EnableEnhancedInstructionSet>StreamingSIMDExtensions2</EnableEnhancedInstructionSet>
+      <MultiProcessorCompilation>true</MultiProcessorCompilation>
     </ClCompile>
     <ResourceCompile>
       <PreprocessorDefinitions>_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
@@ -167,6 +168,7 @@ copy $(OutDir)$(TargetName)$(TargetExt) ..\..\bin\</Command>
       <DebugInformationFormat />
       <CompileAs>Default</CompileAs>
       <EnableEnhancedInstructionSet>StreamingSIMDExtensions2</EnableEnhancedInstructionSet>
+      <MultiProcessorCompilation>true</MultiProcessorCompilation>
     </ClCompile>
     <ResourceCompile>
       <PreprocessorDefinitions>NDEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
@@ -215,6 +217,7 @@ copy $(OutDir)$(TargetName)$(TargetExt) ..\..\bin\</Command>
       <CompileAs>Default</CompileAs>
       <EnableEnhancedInstructionSet>
       </EnableEnhancedInstructionSet>
+      <MultiProcessorCompilation>true</MultiProcessorCompilation>
     </ClCompile>
     <ResourceCompile>
       <PreprocessorDefinitions>_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
@@ -266,6 +269,7 @@ copy $(OutDir)$(TargetName)$(TargetExt) ..\..\bin\</Command>
       <CompileAs>Default</CompileAs>
       <EnableEnhancedInstructionSet>
       </EnableEnhancedInstructionSet>
+      <MultiProcessorCompilation>true</MultiProcessorCompilation>
     </ClCompile>
     <ResourceCompile>
       <PreprocessorDefinitions>NDEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
diff --git a/source/SoundTouch/SoundTouch.vcxproj b/source/SoundTouch/SoundTouch.vcxproj
index 82e6288..b188872 100644
--- a/source/SoundTouch/SoundTouch.vcxproj
+++ b/source/SoundTouch/SoundTouch.vcxproj
@@ -112,6 +112,7 @@
       <EnableEnhancedInstructionSet>StreamingSIMDExtensions2</EnableEnhancedInstructionSet>
       <XMLDocumentationFileName>$(IntDir)</XMLDocumentationFileName>
       <BrowseInformationFile>$(IntDir)</BrowseInformationFile>
+      <MultiProcessorCompilation>true</MultiProcessorCompilation>
     </ClCompile>
     <ResourceCompile>
       <PreprocessorDefinitions>NDEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
@@ -153,6 +154,7 @@ copy $(OutDir)$(TargetName)$(TargetExt) ..\..\lib</Command>
       </EnableEnhancedInstructionSet>
       <XMLDocumentationFileName>$(IntDir)</XMLDocumentationFileName>
       <BrowseInformationFile>$(IntDir)</BrowseInformationFile>
+      <MultiProcessorCompilation>true</MultiProcessorCompilation>
     </ClCompile>
     <ResourceCompile>
       <PreprocessorDefinitions>NDEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
@@ -188,6 +190,7 @@ copy $(OutDir)$(TargetName)$(TargetExt) ..\..\lib</Command>
       <EnableEnhancedInstructionSet>StreamingSIMDExtensions2</EnableEnhancedInstructionSet>
       <XMLDocumentationFileName>$(IntDir)</XMLDocumentationFileName>
       <BrowseInformationFile>$(IntDir)</BrowseInformationFile>
+      <MultiProcessorCompilation>true</MultiProcessorCompilation>
     </ClCompile>
     <ResourceCompile>
       <PreprocessorDefinitions>_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
@@ -227,6 +230,7 @@ copy $(OutDir)$(TargetName)$(TargetExt) ..\..\lib</Command>
       </EnableEnhancedInstructionSet>
       <XMLDocumentationFileName>$(IntDir)</XMLDocumentationFileName>
       <BrowseInformationFile>$(IntDir)</BrowseInformationFile>
+      <MultiProcessorCompilation>true</MultiProcessorCompilation>
     </ClCompile>
     <ResourceCompile>
       <PreprocessorDefinitions>_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>