Returns the normal file extension associated with a particular driver (like "wav" or "au"). This is just an information function to allow library users to guess appropriate file names. You can safely ignore the recommended extension.

public static string file_extension(
	int driver_id
)

Public Shared Function file_extension ( _
	driver_id As Integer _
) As String

public:
static String^ file_extension(
	int driver_id
)