Upload mp3 by using asp.net

web.config

<configuration>
  <system.web>

    <compilation debug="true" targetFramework="4.5"/>
    <httpRuntime targetFramework="4.5" executionTimeout="240" maxRequestLength="20480"/>
  </system.web>
  <connectionStrings>
    <add name="constr" connectionString="server=AKRAM-PC;database=Ekram;uid=sa;pwd=akram" providerName="System.Data.SqlClient"/>
  </connectionStrings>

  <system.webServer>
    <security>
      <requestFiltering>
        <requestLimits maxAllowedContentLength="3000000000" />
      </requestFiltering>
    </security>
  </system.webServer>

</configuration>

aspx
<div>
            <asp:GridView ID="GridView1" 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=FileCS.ashx?Id=<%# Eval("Id") %>'
                        width="240" height="20" id="dewplayer">
                        <param name="wmode" value="transparent" />
                        <param name="movie" value='dewplayer-vol.swf?mp3=FileCS.ashx?Id=<%# Eval("Id") %>'/>
                    </object>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:HyperLinkField DataNavigateUrlFields="Id" Text = "Download" DataNavigateUrlFormatString = "~/FileCS.ashx?Id={0}" HeaderText="Download" />
        </Columns>
    </asp:GridView>
        </div><div><asp:FileUpload ID="Fump3" runat="server" /> <asp:Button ID="btnup" runat="server" Text="Upload" OnClick="btnup_Click" /></div>
    </div>

ADD THE WEB HANDLER (ashx) in project

<%@ WebHandler Language="C#" Class="FileCS" %>

using System;
using System.Web;
using System.Data.SqlClient;
using System.Configuration;
public class FileCS : IHttpHandler
{
    public void ProcessRequest(HttpContext context)
    {
        int id = int.Parse(context.Request.QueryString["id"]);
        byte[] bytes;
        string contentType;
        string strConnString = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
        string name;
        using (SqlConnection con = new SqlConnection(strConnString))
        {
            using (SqlCommand cmd = new SqlCommand())
            {
                cmd.CommandText = "select Name, Data, ContentType from tblFiles where Id=@Id";
                cmd.Parameters.AddWithValue("@Id", id);
                cmd.Connection = con;
                con.Open();
                SqlDataReader sdr = cmd.ExecuteReader();
                sdr.Read();
                bytes = (byte[])sdr["Data"];
                contentType = sdr["ContentType"].ToString();
                name = sdr["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;
        }
    }
}


.cs

private void BindGrid()
    {
        string strConnString = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
        using (SqlConnection con = new SqlConnection(strConnString))
        {
            using (SqlCommand cmd = new SqlCommand())
            {
                cmd.CommandText = "select Id, Name from tblFiles";
                cmd.Connection = con;
                con.Open();
                GridView1.DataSource = cmd.ExecuteReader();
                GridView1.DataBind();
                con.Close();
            }
        }
    }
    protected void btnup_Click(object sender, EventArgs e)
    {
        using (BinaryReader br = new BinaryReader(Fump3.PostedFile.InputStream))
        {
            byte[] bytes = br.ReadBytes((int)Fump3.PostedFile.InputStream.Length);
            string strConnString = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
            using (SqlConnection con = new SqlConnection(strConnString))
            {
                using (SqlCommand cmd = new SqlCommand())
                {
                    cmd.CommandText = "insert into tblFiles(Name, ContentType, Data) values (@Name, @ContentType, @Data)";
                    cmd.Parameters.AddWithValue("@Name", Path.GetFileName(Fump3.PostedFile.FileName));
                    cmd.Parameters.AddWithValue("@ContentType", "audio/mpeg3");
                    cmd.Parameters.AddWithValue("@Data", bytes);
                    cmd.Connection = con;
                    con.Open();
                    cmd.ExecuteNonQuery();
                    con.Close();
                }
            }
        }
        Response.Redirect(Request.Url.AbsoluteUri);
  
    }

Database sql 

CREATE TABLE [dbo].[tblFiles](
    [Id] [int] IDENTITY(1,1) NOT NULL,
    [Name] [varchar](200) NULL,
    [ContentType] [varchar](50) NULL,
    [Data] [varbinary](max) NULL,
 CONSTRAINT [PK_tblFiles] PRIMARY KEY CLUSTERED
(
    [id] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
) ON [PRIMARY]

GO