public void VerifierPlaylist(ListBox listePlayliste)
        {
            listePlayliste.Items.Clear();
            string duree   = "";
            int    heure   = 0;
            int    minute  = 0;
            int    seconde = 0;

            foreach (Chanson c in playlist)
            {
                MesOutils.ConvertiSecondes(c.GetDuree(), out heure, out minute, out seconde);
                duree = heure.ToString() + "h" + minute.ToString() + "min" + seconde.ToString() + "sec";
                listePlayliste.Items.Add(c.GetTitre() + " - " + c.GetInterprete() + " - " + duree);
            }
        }
        public void DureeTotalPlayListe(Label tmpTotal)
        {
            int total   = 0;
            int heure   = 0;
            int minute  = 0;
            int seconde = 0;

            foreach (Chanson c in playlist)
            {
                total += c.GetDuree();
            }
            MesOutils.ConvertiSecondes(total, out heure, out minute, out seconde);
            string dureeTotale = heure.ToString() + "h" + minute.ToString() + "min" + seconde.ToString() + "sec";

            tmpTotal.Text = dureeTotale;
        }