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        private ACListBox playListBox;                    

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                this.playListBox = new ACListBox();
                this.formSplitContainer.Panel2.Controls.Add(this.playListBox);                    

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    class ACListBox : ListBox
    {

        #region Attributes

        private ListBox acListBox;
        private String pTrackName;

        public String trackName
        {
            get
            {
                return this.pTrackName;
            }
            set
            {
                this.pTrackName = value;
            }
        }

        #endregion

        public ACListBox()
        {
            this.acListBox = new ListBox();
            this.acListBox.Dock = System.Windows.Forms.DockStyle.Fill;
            this.acListBox.FormattingEnabled = true;
            this.acListBox.Location = new System.Drawing.Point(0, 0);
            this.acListBox.Name = "playListBox";
            this.acListBox.Size = new System.Drawing.Size(248, 420);
            this.acListBox.TabIndex = 0;
            this.acListBox.Click += new EventHandler(acListBox_Click);
        }
        public ACListBox(ListBox listBox)
        {
            this.acListBox = listBox;
        }

        public void getItem()
        {
            this.acListBox.Items.Add(this.trackName);
        }

        private void acListBox_Click(object sender, EventArgs e)
        {
            MessageBox.Show("Blubb");
        }
    }