Index: source/soundmanager/scripting/SoundGroup.h
===================================================================
--- source/soundmanager/scripting/SoundGroup.h
+++ source/soundmanager/scripting/SoundGroup.h
@@ -55,8 +55,6 @@
 	// (ignored if the eOmnipresent flag is set)
 	void PlayNext(const CVector3D& position, entity_id_t source);
 
-	float RadiansOffCenter(const CVector3D& position, bool& onScreen, float& itemRollOff);
-
 	// Load a group
 	bool LoadSoundGroup(const VfsPath& pathnameXML);
 
@@ -83,6 +81,8 @@
 #if CONFIG2_AUDIO
 	// We store the handles so we can load now and play later
 	std::vector<CSoundData*> m_SoundGroups;
+
+	float RadiansOffCenter(const CVector3D& position, bool& onScreen, float& itemRollOff);
 #endif
 	u32 m_Seed;
 	// We need the filenames so we can reload when necessary.
Index: source/soundmanager/scripting/SoundGroup.cpp
===================================================================
--- source/soundmanager/scripting/SoundGroup.cpp
+++ source/soundmanager/scripting/SoundGroup.cpp
@@ -121,6 +121,7 @@
 	ReleaseGroup();
 }
 
+#if CONFIG2_AUDIO
 float CSoundGroup::RadiansOffCenter(const CVector3D& position, bool& onScreen, float& itemRollOff)
 {
 	const int screenWidth = g_Game->GetView()->GetCamera()->GetViewPort().m_Width;
@@ -167,6 +168,7 @@
 
 	return answer;
 }
+#endif // CONFIG2_AUDIO
 
 void CSoundGroup::UploadPropertiesAndPlay(size_t index, const CVector3D& position, entity_id_t source)
 {