diff --git a/stepmania/src/RageSoundReader_Resample_Good.cpp b/stepmania/src/RageSoundReader_Resample_Good.cpp
index 8691c597cb..bd22561509 100644
--- a/stepmania/src/RageSoundReader_Resample_Good.cpp
+++ b/stepmania/src/RageSoundReader_Resample_Good.cpp
@@ -594,9 +594,9 @@ float RageSoundReader_Resample_Good::GetStreamToSourceRatio() const
 	return fRatio;
 }
 
-RageSoundReader_Resample_Good::RageSoundReader_Resample_Good( RageSoundReader *pSource, int iSampleRate )
+RageSoundReader_Resample_Good::RageSoundReader_Resample_Good( RageSoundReader *pSource, int iSampleRate ):
+	RageSoundReader_Filter( pSource )
 {
-	m_pSource = pSource;
 	m_iSampleRate = iSampleRate;
 	m_fRate = -1;
 	ReopenResampler();
@@ -661,17 +661,6 @@ RageSoundReader_Resample_Good::~RageSoundReader_Resample_Good()
 {
 	for( size_t iChannel = 0; iChannel < m_apResamplers.size(); ++iChannel )
 		delete m_apResamplers[iChannel];
-	delete m_pSource;
-}
-
-int RageSoundReader_Resample_Good::GetLength() const
-{
-	return m_pSource->GetLength();
-}
-
-int RageSoundReader_Resample_Good::GetLength_Fast() const
-{
-	return m_pSource->GetLength_Fast();
 }
 
 /* iFrame is in the destination rate.  Seek the source in its own sample rate. */
@@ -790,11 +779,10 @@ void RageSoundReader_Resample_Good::SetRate( float fRatio )
 }
 
 RageSoundReader_Resample_Good::RageSoundReader_Resample_Good( const RageSoundReader_Resample_Good &cpy ):
-	RageSoundReader(cpy)
+	RageSoundReader_Filter(cpy)
 {
 	for( size_t i = 0; i < cpy.m_apResamplers.size(); ++i )
 		this->m_apResamplers.push_back( new RageSoundResampler_Polyphase(*cpy.m_apResamplers[i]) );
-	this->m_pSource = cpy.m_pSource->Copy();
 	this->m_iSampleRate = cpy.m_iSampleRate;
 	this->m_fRate = cpy.m_fRate;
 }
diff --git a/stepmania/src/RageSoundReader_Resample_Good.h b/stepmania/src/RageSoundReader_Resample_Good.h
index 8fc8e0bc6c..2cbde42bea 100644
--- a/stepmania/src/RageSoundReader_Resample_Good.h
+++ b/stepmania/src/RageSoundReader_Resample_Good.h
@@ -3,19 +3,17 @@
 #ifndef RAGE_SOUND_READER_RESAMPLE_GOOD_H
 #define RAGE_SOUND_READER_RESAMPLE_GOOD_H
 
-#include "RageSoundReader.h"
+#include "RageSoundReader_Filter.h"
 
 class RageSoundResampler_Polyphase;
 
 /* This class changes the sampling rate of a sound. */
-class RageSoundReader_Resample_Good: public RageSoundReader
+class RageSoundReader_Resample_Good: public RageSoundReader_Filter
 {
 public:
 	/* We own source. */
 	RageSoundReader_Resample_Good( RageSoundReader *pSource, int iSampleRate );
 	RageSoundReader_Resample_Good( const RageSoundReader_Resample_Good &cpy );
-	int GetLength() const;
-	int GetLength_Fast() const;
 	int SetPosition( int iFrame );
 	int Read( char *pBuf, int iFrames );
 	virtual ~RageSoundReader_Resample_Good();
@@ -23,14 +21,11 @@ public:
 	bool SetProperty( const RString &sProperty, float fValue );
 	int GetNextSourceFrame() const;
 	float GetStreamToSourceRatio() const;
-	RageSoundReader *GetSource() { return m_pSource; }
 
 	/* Change the rate of a sound without changing the sample rate. */
 	void SetRate( float fRatio );
 
 	int GetSampleRate() const { return m_iSampleRate; }
-	unsigned GetNumChannels() const { return m_pSource->GetNumChannels(); }
-	bool IsStreamingFromDisk() const { return m_pSource->IsStreamingFromDisk(); }
 
 private:
 	void Reset();
@@ -39,7 +34,6 @@ private:
 
 	vector<RageSoundResampler_Polyphase *> m_apResamplers; /* one per channel */
 
-	RageSoundReader *m_pSource;
 	int m_iSampleRate;
 	float m_fRate;
 };