[MSDN Library June 1998] auxSetVolume (42.1052631578947%)
MSDN Library Visual Studio 6.0 > Platform SDK > Graphics and Multimedia Services > Multimedia Reference > Multimedia Functions
[MSDN Library April 2000] auxSetVolume (40.1315789473684%)
MSDN Library - April 2000 > Platform SDK > Graphics and Multimedia Services > Windows Multimedia > Multimedia Reference > Multimedia Functions