var sound = m_Map.GetSoundMaster();

#include "CXSoundMaster.h"

CXSoundMsater sound = m_Map.GetSoundMaster();                   

TalMapXLib.IXSoundMaster sound = m_Map.GetSoundMaster();

Dim sound As TalMapXLib.IXSoundMaster
    
Set sound = m_Map.GetSoundMaster