Hi. I need to track which user downloads which mp3 on my server. I do not want it to be IP based, but user name based. If the user is registered(via a lookup on mySQL db and maybe php) he can access the podcast. I tried redirecting, but the feed(rss) reader looks for an .xml file. I thought maybe attach a variable to a feed url(eg http://www.example.com/abc.xml?name=dion and have php do the authentication, and pass control back to apache to serv the file? Is this possible? Thanks.