media player not showing .....

Hi to all,
I am stucked in a problem. I am having a video gallery on my website. On local host it working fine ie on clicking any song from the list it playing that song. But when I uploaded it to the server, the player is not even visible on the screen. Can anybody suggest me why is it so?
<%@ Page Language="C#" MasterPageFile="~/MasterPage2.master" AutoEventWireup="true" CodeFile="VideoGallery.aspx.cs" Inherits="VideoGallery" Title="Untitled Page" %> <%@ Register assembly="Media-Player-ASP.NET-Control" namespace="Media_Player_ASP.NET_Control" tagprefix="cc1" %> <asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server"> </asp:Content> <asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server"> <div id="textcb"> <div id="careera" align="center"> <div id="careerb" align="center"> <cc1:Media_Player_Control ID="MediaPlayer" runat="server" ...