diff --git a/stepmania/src/RageSound.cpp b/stepmania/src/RageSound.cpp
index e49efe394e..f3adaecf7f 100644
--- a/stepmania/src/RageSound.cpp
+++ b/stepmania/src/RageSound.cpp
@@ -786,6 +786,11 @@ void RageSound::ApplyParams()
 	m_pSource->SetProperty( "Speed", m_Param.m_fSpeed );
 }
 
+bool RageSound::SetProperty( const RString &sProperty, float fValue )
+{
+	return m_pSource->SetProperty( sProperty, fValue );
+}
+
 RageSoundParams::StopMode_t RageSound::GetStopMode() const
 {
 	if( m_Param.StopMode != RageSoundParams::M_AUTO )
diff --git a/stepmania/src/RageSound.h b/stepmania/src/RageSound.h
index 594ffad09d..ccba300079 100644
--- a/stepmania/src/RageSound.h
+++ b/stepmania/src/RageSound.h
@@ -144,6 +144,7 @@ public:
 	int GetID() const { return m_iID; }
 	void SetParams( const RageSoundParams &p );
 	const RageSoundParams &GetParams() const { return m_Param; }
+	bool SetProperty( const RString &sProperty, float fValue );
 
 	//
 	// Lua