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diff --git a/soundemittersystem/soundemittersystembase.h b/soundemittersystem/soundemittersystembase.h
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+++ b/soundemittersystem/soundemittersystembase.h
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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//=============================================================================//
+
+#ifndef SOUNDEMITTERSYSTEMBASE_H
+#define SOUNDEMITTERSYSTEMBASE_H
+#ifdef _WIN32
+#pragma once
+#endif
+
+#include "SoundEmitterSystem/isoundemittersystembase.h"
+#include "soundflags.h"
+#include "interval.h"
+#include "UtlSortVector.h"
+#include <tier1/utlstring.h>
+#include <tier1/utlhashtable.h>
+
+soundlevel_t TextToSoundLevel( const char *key );
+
+struct CSoundEntry
+{
+	CUtlConstString				m_Name;
+	CSoundParametersInternal	m_SoundParams;
+	uint16						m_nScriptFileIndex;
+	bool						m_bRemoved : 1;
+	bool						m_bIsOverride : 1;
+
+	bool						IsOverride() const
+	{
+		return m_bIsOverride;
+	}
+};
+
+struct CSoundEntryHashFunctor : CaselessStringHashFunctor
+{
+	using CaselessStringHashFunctor::operator();
+	unsigned int operator()( CSoundEntry *e ) const
+	{
+		return CaselessStringHashFunctor::operator()( e->m_Name.Get() );
+	}
+};
+
+struct CSoundEntryEqualFunctor : CaselessStringEqualFunctor
+{
+	using CaselessStringEqualFunctor::operator();
+	bool operator()( CSoundEntry *lhs, CSoundEntry *rhs ) const
+	{
+		return CaselessStringEqualFunctor::operator()( lhs->m_Name.Get(), rhs->m_Name.Get() );
+	}
+	bool operator()( CSoundEntry *lhs, const char *rhs ) const
+	{
+		return CaselessStringEqualFunctor::operator()( lhs->m_Name.Get(), rhs );
+	}
+};
+
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Base class for sound emitter system handling (can be used by tools)
+//-----------------------------------------------------------------------------
+class CSoundEmitterSystemBase : public ISoundEmitterSystemBase
+{
+public:
+	CSoundEmitterSystemBase();
+	virtual ~CSoundEmitterSystemBase() { }
+
+	// Methods of IAppSystem
+	virtual bool Connect( CreateInterfaceFn factory );
+	virtual void Disconnect();
+	virtual void *QueryInterface( const char *pInterfaceName );
+	virtual InitReturnVal_t Init();
+	virtual void Shutdown();
+
+public:
+
+	virtual bool ModInit();
+	virtual void ModShutdown();
+
+	virtual int	GetSoundIndex( const char *pName ) const;
+	virtual bool IsValidIndex( int index );
+	virtual int GetSoundCount( void );
+
+	virtual const char *GetSoundName( int index );
+	virtual bool GetParametersForSound( const char *soundname, CSoundParameters& params, gender_t gender, bool isbeingemitted = false );
+	virtual const char *GetWaveName( CUtlSymbol& sym );
+
+	virtual CUtlSymbol AddWaveName( const char *name );
+
+	virtual soundlevel_t LookupSoundLevel( const char *soundname );
+	virtual const char *GetWavFileForSound( const char *soundname, char const *actormodel );
+	virtual const char *GetWavFileForSound( const char *soundname, gender_t gender );
+
+	virtual int		CheckForMissingWavFiles( bool verbose );
+	virtual const char *GetSourceFileForSound( int index ) const;
+	// Iteration methods
+	virtual int		First() const;
+	virtual int		Next( int i ) const;
+	virtual int		InvalidIndex() const;
+
+	virtual CSoundParametersInternal *InternalGetParametersForSound( int index );
+
+
+	// The host application is responsible for dealing with dirty sound scripts, etc.
+	virtual bool		AddSound( const char *soundname, const char *scriptfile, const CSoundParametersInternal& params );
+	virtual void		RemoveSound( const char *soundname );
+
+	virtual void		MoveSound( const char *soundname, const char *newscript );
+
+	virtual void		RenameSound( const char *soundname, const char *newname );
+	virtual void		UpdateSoundParameters( const char *soundname, const CSoundParametersInternal& params );
+
+	virtual int			GetNumSoundScripts() const;
+	virtual char const	*GetSoundScriptName( int index ) const;
+	virtual bool		IsSoundScriptDirty( int index ) const;
+	virtual int			FindSoundScript( const char *name ) const;
+
+	virtual void		SaveChangesToSoundScript( int scriptindex );
+
+	virtual void		ExpandSoundNameMacros( CSoundParametersInternal& params, char const *wavename );
+	virtual gender_t	GetActorGender( char const *actormodel );
+	virtual void		GenderExpandString( char const *actormodel, char const *in, char *out, int maxlen );
+	virtual void		GenderExpandString( gender_t gender, char const *in, char *out, int maxlen );
+	virtual bool		IsUsingGenderToken( char const *soundname );
+	virtual unsigned int GetManifestFileTimeChecksum();
+
+	virtual bool			GetParametersForSoundEx( const char *soundname, HSOUNDSCRIPTHANDLE& handle, CSoundParameters& params, gender_t gender, bool isbeingemitted = false );
+	virtual soundlevel_t	LookupSoundLevelByHandle( char const *soundname, HSOUNDSCRIPTHANDLE& handle );
+
+
+	// Called from both client and server (single player) or just one (server only in dedicated server and client only if connected to a remote server)
+	// Called by LevelInitPreEntity to override sound scripts for the mod with level specific overrides based on custom mapnames, etc.
+	virtual void			AddSoundOverrides( char const *scriptfile, bool bPreload = false );
+
+	// Called by either client or server in LevelShutdown to clear out custom overrides
+	virtual void			ClearSoundOverrides();
+
+	virtual void		ReloadSoundEntriesInList( IFileList *pFilesToReload );
+
+	// Called by either client or server to force ModShutdown and ModInit
+	virtual void			Flush();
+
+private:
+
+	bool InternalModInit();
+	void InternalModShutdown();
+
+	void AddSoundsFromFile( const char *filename, bool bPreload, bool bIsOverride = false, bool bRefresh = false );
+
+	bool		InitSoundInternalParameters( const char *soundname, KeyValues *kv, CSoundParametersInternal& params );
+
+	void LoadGlobalActors();
+
+	float	TranslateAttenuation( const char *key );
+	soundlevel_t	TranslateSoundLevel( const char *key );
+	int TranslateChannel( const char *name );
+
+	int		FindBestSoundForGender( SoundFile *pSoundnames, int c, gender_t gender );
+	void	EnsureAvailableSlotsForGender( SoundFile *pSoundnames, int c, gender_t gender );
+	void	AddSoundName( CSoundParametersInternal& params, char const *wavename, gender_t gender );
+
+	CUtlHashtable< CUtlConstString, gender_t, CaselessStringHashFunctor, UTLConstStringCaselessStringEqualFunctor<char> > m_ActorGenders;
+	CUtlStableHashtable< CSoundEntry*, empty_t, CSoundEntryHashFunctor, CSoundEntryEqualFunctor, uint16, const char* > m_Sounds;
+
+    CUtlVector< CSoundEntry * >			m_SavedOverrides; 
+	CUtlVector< FileNameHandle_t >				m_OverrideFiles;
+
+	struct CSoundScriptFile
+	{
+		FileNameHandle_t hFilename;
+		bool		dirty;
+	};
+
+	CUtlVector< CSoundScriptFile >	m_SoundKeyValues;
+	int					m_nInitCount;
+	unsigned int		m_uManifestPlusScriptChecksum;
+
+	CUtlSymbolTable		m_Waves;
+};
+
+#endif // SOUNDEMITTERSYSTEMBASE_H