Binaryworld - PlayAVIVideoOFF - Play only the audio track of an AVI file ... [ VB -> Multimedia ]

Private Declare Function mciSendString Lib "winmm" Alias "mciSendStringA" _
  (ByVal lpstrCommand As String, ByVal lpstrReturnString As String, _
  ByVal uReturnLength As Long, ByVal hwndCallback As Long) As Long
Private Declare Function mciGetErrorString Lib "winmm" Alias _
  "mciGetErrorStringA" (ByVal dwError As Long, ByVal lpstrBuffer As String, _
  ByVal uLength As Long) As Long
Private Declare Function GetShortPathName Lib "kernel32" Alias _
  "GetShortPathNameA" (ByVal lpszLongPath As String, _
  ByVal lpszShortPath As String, ByVal cchBuffer As Long) As Long

' Play the audio track of an AVI file.
' FileName is a string containing the full path of the file.

Sub PlayAVIVideoOFF(FileName As String)
  Dim RetVal As Long
  Dim CommandString As String
  Dim ShortFileName As String * 260
  Dim deviceIsOpen As Boolean

  ' Retrieve short file name format
  RetVal = GetShortPathName(FileName, ShortFileName, Len(ShortFileName))
  FileName = Left$(ShortFileName, RetVal)

  ' Open the device
  CommandString = "Open " & FileName & " type avivideo alias AVIFile"
  RetVal = mciSendString(CommandString, vbNullString, 0, 0&)
  If RetVal Then GoTo error

  ' remember that the device is now open
  deviceIsOpen = True

  ' Set video OFF
  CommandString = "Set AVIFile video off"
  RetVal = mciSendString(CommandString, vbNullString, 0, 0&)
  If RetVal Then GoTo error

  ' Play the file
  CommandString = "Play AVIFile wait"
  RetVal = mciSendString(CommandString, vbNullString, 0, 0&)
  If RetVal Then GoTo error

  ' Close the device
  CommandString = "Close AVIFile"
  RetVal = mciSendString(CommandString, vbNullString, 0, 0&)
  If RetVal Then GoTo error

  Exit Sub

error:
  ' An error occurred.
  ' Get the error description
  Dim ErrorString As String
  ErrorString = Space$(256)
  mciGetErrorString RetVal, ErrorString, Len(ErrorString)
  ErrorString = Left$(ErrorString, InStr(ErrorString, vbNullChar) - 1)

  ' close the device if necessary
  If deviceIsOpen Then
    CommandString = "Close AVIFile"
    mciSendString CommandString, vbNullString, 0, 0&
  End If

  ' raise a custom error, with the proper description
  Err.Raise 999, , ErrorString

End Function