Dei uma pesquisa no google e encontrei isso
http://www.aspnetaudio.com/
http://www.vbmania.com.br/pages/index.php?varModulo=Forum&varMethod=abrir&varID=374129
http://forums.asp.net/p/1173584/1970829.aspx
http://channel9.msdn.com/coding4fun/articles/Creating-Loud-Websites
http://msdn.microsoft.com/pt-br/library/cc580614.aspx
http://www.devsource.com/article2/0,1895,1772060,00.asp