diff --git a/stepmania/src/Makefile.am b/stepmania/src/Makefile.am
index b1672da5a2..afbd87632c 100644
--- a/stepmania/src/Makefile.am
+++ b/stepmania/src/Makefile.am
@@ -343,8 +343,11 @@ RageInputDevice.cpp RageInputDevice.h RageLog.cpp RageLog.h RageMath.cpp RageMat
 RageModelGeometry.cpp RageModelGeometry.h RageSound.cpp RageSound.h RageSoundManager.cpp RageSoundManager.h \
 RageSoundUtil.cpp RageSoundUtil.h RageSoundMixBuffer.cpp RageSoundMixBuffer.h \
 RageSoundPosMap.cpp RageSoundPosMap.h RageSoundReader.cpp RageSoundReader.h RageSoundReader_FileReader.cpp RageSoundReader_FileReader.h \
+RageSoundReader_Filter.h \
+RageSoundReader_PitchChange.cpp RageSoundReader_PitchChange.h \
 RageSoundReader_Preload.cpp RageSoundReader_Preload.h \
 RageSoundReader_Resample_Good.cpp RageSoundReader_Resample_Good.h \
+RageSoundReader_SpeedChange.cpp RageSoundReader_SpeedChange.h \
 RageSoundReader_Chain.cpp RageSoundReader_Chain.h \
 RageSurface.cpp RageSurface.h RageSurfaceUtils.cpp RageSurfaceUtils.h \
 RageSurfaceUtils_Dither.cpp RageSurfaceUtils_Dither.h \