BOOL sndPlaySound(LPCSTR lpszSound, UINT fuSound);

lpszSound

A string that specifies the sound to play. This parameter can be either an entry in the registry or in WIN.INI that identifies a system sound, or it can be the name of a waveform-audio file. (If the function does not find the entry, the parameter is treated as a filename.) If this parameter is NULL, any currently playing sound is stopped.