Оформил: DeeCo
Автор: http://www.swissdelphicenter.ch

uses
   mmsystem;

   procedure TForm1.Button1Click(Sender: TObject);
 var
   s: array[0..64] of Char;
   error: Cardinal;
   Text: array[0..255] of Char;
 begin
   error := mciSendstring('open cdaudio alias geraet', nil, 0, Handle);
   if error <> 0 then
   begin
     mciGetErrorstring(error, @Text, 255);
     ShowMessage(Text);
     mciSendstring('close geraet', nil, 0, Handle);
     Exit;
   end;

   error := mciSendstring('status geraet mode', @s, SizeOf(s), Handle);
   if error <> 0 then
   begin
     mciGetErrorstring(error, @Text, 255);
     ShowMessage(Text);
     mciSendstring('close geraet', nil, 0, Handle);
     Exit;
   end;

   mciSendstring('close geraet', nil, 0, Handle);
   ShowMessage('Message: ' + s);
 end;