diff --git a/stepmania/src/StepMania.dsp b/stepmania/src/StepMania.dsp
index ba681c1610..28889986a8 100644
--- a/stepmania/src/StepMania.dsp
+++ b/stepmania/src/StepMania.dsp
@@ -611,6 +611,14 @@ SOURCE=.\arch\Sound\RageSoundDriver_DSound_Software.cpp
 
 SOURCE=.\arch\Sound\RageSoundDriver_DSound_Software.h
 # End Source File
+# Begin Source File
+
+SOURCE=.\arch\Sound\RageSoundDriver_WaveOut.cpp
+# End Source File
+# Begin Source File
+
+SOURCE=.\arch\Sound\RageSoundDriver_WaveOut.h
+# End Source File
 # End Group
 # Begin Group "ErrorDialog"