There are a lot of links that are hidden behind javascript or ActiveX. So, they are very DIFFICULT to get their real link for offline usage.

These are included windows media streaming, real media streaming, flash video, MMS, RTSP protocols…

[FireLion] Link Sniffer supports MOST of MULTIMEDIA files like: wma, wmv, mp3, avi, asx, swf, flv, zip, rar, 7z, mms protocol, rtsp protocol...

You DO NOT NEED TO KNOW ANYTHING about complex configurations, protocols... JUST RUN AND WAIT FOR YOUR REAL LINKS APPEAR.