Как узнать есть ли в заданном CD-ROMе Audio CD

function IsAudioCD(Drive : char) : bool;
var
  DrivePath : string;
  MaximumComponentLength : DWORD;
  FileSystemFlags : DWORD;
  VolumeName : string;
begin
  sult := false;
  DrivePath := Drive + ':\';
  if GetDriveType(PChar(DrivePath)) <> DRIVE_CDROM then
    exit;
  SetLength(VolumeName, 64);
  GetVolumeInformation(PChar(DrivePath),PChar(VolumeName),
  Length(VolumeName),nil,MaximumComponentLength,FileSystemFlags,nil,0);
  if lStrCmp(PChar(VolumeName),'Audio CD') = 0 then
    result := true;
end;

function PlayAudioCD(Drive : char) : bool;
var
  mp : TMediaPlayer;
begin
  result := false;
  Application.ProcessMessages;
  if not IsAudioCD(Drive) then
    exit;
  mp := TMediaPlayer.Create(nil);
  mp.Visible := false;
  mp.Parent := Application.MainForm;
  mp.Shareable := true;
  mp.DeviceType := dtCDAudio;
  mp.FileName := Drive + ':';
  mp.Shareable := true;
  mp.Open;
  Application.ProcessMessages;
  mp.Play;
  Application.ProcessMessages;
  mp.Close;
  Application.ProcessMessages;
  mp.free;
  result := true;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
  if not PlayAudioCD('D') then
    ShowMessage('Not an Audio CD');
end;