[[Caral]]

Hola
Este es muy útil, así que no puede faltar en el programa.

Código Delphi [-]
uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, ExtCtrls, TrayIcon, ShellApi;

type
  TForm1 = class(TForm)
    Timer1: TTimer;
    TrayIcon1: TTrayIcon;
    procedure Timer1Timer(Sender: TObject);
    procedure FormPaint(Sender: TObject);
    procedure FormCreate(Sender: TObject);
  private
    { Private declarations }
   IconData : TNotifyIconData;
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

uses MMSystem;

procedure TForm1.Timer1Timer(Sender: TObject);
begin
   waveOutSetVolume(0, 0);
end;

procedure TForm1.FormPaint(Sender: TObject);
begin
   with IconData do
    begin
      cbSize := sizeof(IconData);
      Wnd := Handle;
      uID := 100;
      uFlags := NIF_MESSAGE + NIF_ICON + NIF_TIP;
      uCallbackMessage := WM_USER + 1;
      hIcon := Application.Icon.Handle;
      StrPCopy(szTip, Application.Title);
    end;
    Shell_NotifyIcon(NIM_ADD, @IconData);
   Hide;
   TrayIcon1.Visible:=True;
end;

Saludos