diff --git a/stepmania/src/StepMania.dsp b/stepmania/src/StepMania.dsp
index 04b69858c2..9161538535 100644
--- a/stepmania/src/StepMania.dsp
+++ b/stepmania/src/StepMania.dsp
@@ -62,7 +62,7 @@ IntDir=.\../Debug6
 TargetDir=\cvs\stepmania\Program
 TargetName=StepMania-debug
 SOURCE="$(InputPath)"
-PreLink_Cmds=archutils\Win32\verinc                                                                                                                                                                                                                                       	cl                                                                                               /Zl                                                                                               /nologo                                                                                               /c                                                                                               verstub.cpp                                                                                               /Fo$(IntDir)\ 
+PreLink_Cmds=archutils\Win32\verinc                                                                                                                                                                                                                                        	cl                                                                                                /Zl                                                                                                /nologo                                                                                                /c                                                                                                verstub.cpp                                                                                                /Fo$(IntDir)\ 
 PostBuild_Cmds=archutils\Win32\mapconv $(IntDir)\$(TargetName).map $(TargetDir)\StepMania.vdi
 # End Special Build Tool
 
@@ -99,7 +99,7 @@ IntDir=.\../Release6
 TargetDir=\cvs\stepmania\Program
 TargetName=StepMania
 SOURCE="$(InputPath)"
-PreLink_Cmds=archutils\Win32\verinc                                                 	cl                                                  /Zl                                                  /nologo                                                  /c                                                  verstub.cpp                                                  /Fo$(IntDir)\ 
+PreLink_Cmds=archutils\Win32\verinc                                                  	cl                                                   /Zl                                                   /nologo                                                   /c                                                   verstub.cpp                                                   /Fo$(IntDir)\ 
 PostBuild_Cmds=archutils\Win32\mapconv $(IntDir)\$(TargetName).map $(TargetDir)\StepMania.vdi
 # End Special Build Tool
 
@@ -1262,6 +1262,14 @@ SOURCE=.\TrailUtil.cpp
 
 SOURCE=.\TrailUtil.h
 # End Source File
+# Begin Source File
+
+SOURCE=.\Tween.cpp
+# End Source File
+# Begin Source File
+
+SOURCE=.\Tween.h
+# End Source File
 # End Group
 # Begin Group "File Types"