This is a simple example to play audio file.
Step 1:
Add an html page and an audio file in your application.
HTML page:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Untitled Page</title>
</head>
<body>
<bgsound src="Songs/07 - Hai Dard - Udit Narayan.mp3" loop="0" balance="0" volume="0">
</body>
</html>
Step 2:
Now add new page as Video.aspx in your application and drop a button control on the page.
Video.aspx:
<form id="form1" runat="server">
<asp:Button ID="ButtonPlay" runat="server" Text="Play" OnClick="ButtonPlay_Click"/>
</form>
protected void ButtonPlay_Click(object sender, EventArgs e)
{
Response.Redirect("HTMLPage.htm");
}