UnPlug is a FireFox extension which lets you save video and audio which is embedded on a webpage.
UnPlug scans web pages and tells you where things like media players and other embedded objects are getting their data from, and displays it as a simple hyperlink: in most cases, you can then follow the simple download link to save the media file.
UnPlug doesn’t need to connect to external sites to find where media is kept – but it can do if you want it to by downloading the results from KeepVid and VideoDownloader. UnPlug will search, ask and even guess where media is on a website, presenting its results in an easy-to-use results page.
UnPlug can download playlists to tell you even more where media is hidden, and has rules for working out the location of content hidden inside a flash player for some sites.
Download: UnPlug 1.6.06