diff --git a/code/nel/include/nel/sound/clustered_sound.h b/code/nel/include/nel/sound/clustered_sound.h
index 4b28a71ec..e37762b20 100644
--- a/code/nel/include/nel/sound/clustered_sound.h
+++ b/code/nel/include/nel/sound/clustered_sound.h
@@ -189,7 +189,7 @@ public:
 
 	const std::vector<std::pair<NLMISC::CVector, NLMISC::CVector> >	&getAudioPath() { return _AudioPath;}
 
-
+	static void buildSheets(const std::string &packedSheetPath);
 
 private:
 
diff --git a/code/nel/include/nel/sound/u_audio_mixer.h b/code/nel/include/nel/sound/u_audio_mixer.h
index 089013797..a1fb2b3cc 100644
--- a/code/nel/include/nel/sound/u_audio_mixer.h
+++ b/code/nel/include/nel/sound/u_audio_mixer.h
@@ -169,6 +169,10 @@ public:
 	static std::string buildSampleBank(const std::vector<std::string> &sampleList, const std::string &bankDir, const std::string &bankName);
 	/// Build the sound bank packed sheets file from georges sound sheet files with .sound extension in the search path, and return the path to the written file.
 	static std::string buildSoundBank(const std::string &packedSheetDir);
+	/// Build the cluster sound_group sheets.
+	static std::string buildClusteredSoundGroupSheets(const std::string &packedSheetDir);
+	/// Build the user var binding sheets.
+	static std::string buildUserVarBindingSheets(const std::string &packedSheetDir);
 	/** Set the global path to the sample banks
 	 *	If you have specified some sample bank to load in the
 	 *	mixer config file, you MUST set the sample path
diff --git a/code/nel/src/sound/audio_mixer_user.cpp b/code/nel/src/sound/audio_mixer_user.cpp
index fdc6f6e11..0f3ff1110 100644
--- a/code/nel/src/sound/audio_mixer_user.cpp
+++ b/code/nel/src/sound/audio_mixer_user.cpp
@@ -988,6 +988,23 @@ std::string UAudioMixer::buildSoundBank(const std::string &packedSheetDir)
 	return dir + "sounds.packed_sheets";
 }
 
+/// Build the cluster sound_group sheets.
+std::string UAudioMixer::buildClusteredSoundGroupSheets(const std::string &packedSheetDir)
+{
+	std::string dir = CPath::standardizePath(packedSheetDir, true);
+	CClusteredSound::buildSheets(dir);
+	return dir + "sound_groups.packed_sheets";
+}
+
+/// Build the user var binding sheets.
+std::string UAudioMixer::buildUserVarBindingSheets(const std::string &packedSheetDir)
+{
+	std::string dir = CPath::standardizePath(packedSheetDir, true);
+	std::map<std::string, CUserVarSerializer> container;
+	::loadForm("user_var_binding", dir + "user_var_binding.packed_sheets", container, true, false);
+	return dir + "user_var_binding.packed_sheets";
+}
+
 void				CAudioMixerUser::setBackgroundFlagName(uint flagIndex, const std::string &flagName)
 {
 	if (flagIndex < TBackgroundFlags::NB_BACKGROUND_FLAGS)
diff --git a/code/nel/src/sound/clustered_sound.cpp b/code/nel/src/sound/clustered_sound.cpp
index 6e62f3176..52a9848da 100644
--- a/code/nel/src/sound/clustered_sound.cpp
+++ b/code/nel/src/sound/clustered_sound.cpp
@@ -160,10 +160,6 @@ public:
 
 };
 
-// this structure is fill by the loadForm() function and will contain all you need
-std::map<std::string, CSoundGroupSerializer> Container;
-
-
 CClusteredSound::CClusteredSound()
 :	_Scene(0),
 	_RootCluster(0),
@@ -173,21 +169,27 @@ CClusteredSound::CClusteredSound()
 	
 }
 
+void CClusteredSound::buildSheets(const std::string &packedSheetPath)
+{
+	std::map<std::string, CSoundGroupSerializer> container;
+	::loadForm("sound_group", packedSheetPath + "sound_groups.packed_sheets", container, true, false);
+}
 
 void CClusteredSound::init(NL3D::CScene *scene, float portalInterpolate, float maxEarDist, float minGain)
 {
 	// load the sound_group sheets
-	::loadForm("sound_group", CAudioMixerUser::instance()->getPackedSheetPath()+"sound_groups.packed_sheets", Container, CAudioMixerUser::instance()->getPackedSheetUpdate(), false);
+	std::map<std::string, CSoundGroupSerializer> container;
+	::loadForm("sound_group", CAudioMixerUser::instance()->getPackedSheetPath()+"sound_groups.packed_sheets", container, CAudioMixerUser::instance()->getPackedSheetUpdate(), false);
 
 	// copy the container data into internal structure
-	std::map<std::string, CSoundGroupSerializer>::iterator first(Container.begin()), last(Container.end());
+	std::map<std::string, CSoundGroupSerializer>::iterator first(container.begin()), last(container.end());
 	for (; first != last; ++first)
 	{
 		_SoundGroupToSound.insert(first->second._SoundGroupAssoc.begin(), first->second._SoundGroupAssoc.end());
 	}
 
 	// and clear the temporary Container
-	Container.clear();
+	container.clear();
 
 
 	_Scene = scene;
diff --git a/code/nel/tools/sound/build_soundbank/build_soundbank.cpp b/code/nel/tools/sound/build_soundbank/build_soundbank.cpp
index 082b08e90..9829a1898 100644
--- a/code/nel/tools/sound/build_soundbank/build_soundbank.cpp
+++ b/code/nel/tools/sound/build_soundbank/build_soundbank.cpp
@@ -88,6 +88,8 @@ int main(int nNbArg, char **ppArgs)
 
 	// build the sound bank
 	UAudioMixer::buildSoundBank(exportDir);
+	UAudioMixer::buildClusteredSoundGroupSheets(exportDir);
+	UAudioMixer::buildUserVarBindingSheets(exportDir);
 	
 	// and that's all folks
 	return EXIT_SUCCESS;