   xact XACT3CreateEngine
  hi:i found if i do it like this:LRESULT WINAPI MsgProc( HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam ){if( g_audioState.pEngine ){CleanupXACT();PrepareXACT();}}win7 system, the memory will be rasied when the exe ran all time. i didn't why the memory can be rasied.i do "release" before create!thanks   