upload mp3 songs in asp.net

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ASP.NET

i want to upload mp3 song and download it also..
i have correct code but problem is that when i click on upload button then it does'nt go to button click event so that code is not work so what can i do ???plz help me..

my code is below:-

protected void btnUpload_Click(object sender, EventArgs e)
   {
       using (BinaryReader br = new BinaryReader(FileUpload1.PostedFile.InputStream))
       {
           byte[] bytes = br.ReadBytes((int)FileUpload1.PostedFile.InputStream.Length);
           //string strConnString = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
           //using (SqlConnection con = new SqlConnection(strConnString))
           {
               using (SqlCommand cmd = new SqlCommand())
               {
                   cmd.CommandText = "INSERT INTO DSActor.DTL_SONGS(SONG_NAME,SONG_EXTENSION,SONG_BINARY)" + " VALUES (@SONG_NAME,@SONG_EXTENSION,@SONG_BINARY)";
                   cmd.Parameters.AddWithValue("@SONG_NAME", Path.GetFileName(FileUpload1.PostedFile.FileName));
                   cmd.Parameters.AddWithValue("@SONG_EXTENSION", "audio/mpeg3");
                   cmd.Parameters.AddWithValue("@SONG_BINARY", bytes);
                   cmd.Connection = con;
                   con.Open();
                   cmd.ExecuteNonQuery();
                   con.Close();
               }
           }
       }


       Response.Redirect(Request.Url.AbsoluteUri);

   }

handler code is:-

using System;
using System.Web;
using System.Data.SqlClient;
using System.Configuration;
public class File : IHttpHandler
{

    public void ProcessRequest (HttpContext context)
    {
        int TYPE_ID = int.Parse(context.Request.QueryString["TYPE_ID"]);
        byte[] bytes;
        string contentType;
        //string strConnString = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
        String str = ConfigurationManager.ConnectionStrings["con"].ConnectionString;
        string name;
        using (SqlConnection con = new SqlConnection(str))
        {
            using (SqlCommand cmd = new SqlCommand())
            {
                cmd.CommandText = "select SONG_NAME, SONG_EXTENSION, SONG_BINARY from DSActor.DTL_SONGS where TYPE_ID=@Id";
                cmd.Parameters.AddWithValue("@Id", TYPE_ID);
                cmd.Connection = con;
                con.Open();
                SqlDataReader sdr = cmd.ExecuteReader();
                sdr.Read();
                bytes = (byte[])sdr["SONG_BINARY"];
                contentType = sdr["SONG_EXTENSION"].ToString();
                name = sdr["SONG_NAME"].ToString();
                con.Close();
            }
        }
        context.Response.Clear();
        context.Response.Buffer = true;
        context.Response.AppendHeader("Content-Disposition", "attachment; filename=" + name);
        context.Response.ContentType = contentType;
        context.Response.BinaryWrite(bytes);
        context.Response.End();
    }

    public bool IsReusable
    {
        get
        {
            return false;
        }
    }

}

and designing code is (grid view and upload button designing code ):=

<div id="tab3" class="tab_content">
            <h2>Mp3 Songs</h2>
            <div >
             <asp:FileUpload ID="FileUpload1" runat="server" />
             <asp:Button ID="btnUpload" runat="server" Text="Upload" OnClick="btnUpload_Click" />
            <asp:GridView ID="GridView2" runat="server" AutoGenerateColumns="false" RowStyle-BackColor="#A1DCF2" Font-Names = "Arial" Font-Size = "10pt"
    HeaderStyle-BackColor="#3AC0F2" HeaderStyle-ForeColor="White">
        <Columns>
            <asp:BoundField DataField="Name" HeaderText="FileName" />
            <asp:TemplateField>
                <ItemTemplate>
                    <object type="application/x-shockwave-flash" data='dewplayer-vol.swf?mp3=File.ashx?Id=<%# Eval("TYPE_ID") %>'
                        width="240" height="20" id="dewplayer">
                        <param name="wmode" value="transparent" />
                        <param name="movie" value='dewplayer-vol.swf?mp3=File.ashx?Id=<%# Eval("TYPE_ID") %>'/>
                    </object>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:HyperLinkField DataNavigateUrlFields="Id" Text = "Download" DataNavigateUrlFormatString = "~/File.ashx?Id={0}" HeaderText="Download" />
        </Columns>
    </asp:GridView>





          </div>
        </div>

plz help me..
thanks in advance....