Declare Function auxGetNumDevs% Lib "MMSYSTEM" ()
£§ In the appropriate routine:
Dim i As Integer
i = auxGetNumDevs()
If i > 0 Then £§ There is at least one sound card on the system
MsgBox "A Sound Card has been detected."
Else £§ auxGetNumDevs returns a 0 if there is no sound card
MsgBox "There is no Sound Card on this system."
End If