Problem in asp.net website to playing a video

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ASP.NET

I am using this code to play a video on click on link button in DataList

protected void DataList1_ItemCommand1(object source, DataListCommandEventArgs e)
    {
        if (e.CommandName == "select")
        {


                embed1.Attributes.Add("src", @"http://~/Uploads4/");
                embed1.Attributes.Add("filename",e.CommandArgument.ToString());
                this.modal1.Show();



        }

    }

In aspx page code is like this

<asp:Button runat="server" ID="hiddenTargetControlForModalPopup" Style="display: none" />
    <ajaxtoolkit:modalpopupextender ID="modal1" 
            TargetControlID="hiddenTargetControlForModalPopup" PopupControlID="Panel1" 
             runat="server" BehaviorID="bhvModel1">
    <asp:Panel ID="Panel1" runat="server" Height="346px" Width="553px">
    
    <object classid="clsid:6BF52A52-394A-11D3-B153-00C04F79FAA6" id="Player1">

        <param name="URL" value="http://localhost/Music.wmv">

        <param name="http://path_to_the_video">

        <param name="AutoStart" value="1">

        <param name="ShowControls" value="1">

        <param name="ShowStatusBar" value="1">

        <param name="ShowDisplay" value="1">

        <param name="stretchToFit" value="1">

        <embed runat="Server" id="embed1" type="application/x-mplayer2"

pluginspage="http://www.microsoft.com/Windows/Downloads/Contents/MediaPlayer/" 

width="424" height="379" 

 autostart="1" showcontrols="1" showstatusbar="1">

</embed>

</object>
 </param></param></param></param></param></param></param>

all things are works when i paly video filename as c:/Wildlife.wmv
but when it fetch from database AS ~\Uploads4\Wildlife.wmv It does not paly.
if in data base i take C:/Wildlife.wmv then it paly by fetching from database.

~\Uploads4\Wildlife.wmv path inserted automatically from uploding a file.
What is the problem.
please help me.
thanks