Free HTTP Sniffer - Version 1.1 To download windows audio and video streaming and other streaming, you need to know the url(the file name and server address) of you want to download. Many links to those streaming that you come across on the web are hidden behind javascript or activex scripts. So it is sometimes very difficult to figure out the actual urls that correspond to the streams being played. Free HTTP Sniffer is a handy tool that allows you to monitor HTTP traffic in real-time. It can trace wide range of information to find the URLs for all streams on your LAN.