Get Down with Download Manager

DownloadHelper
http://www.downloadhelper.net/index.php

DownloadHelper is a free Firefox extension for downloading flash videos and images from many sites with minimum effort.

You can save videos from sites where there is no option to download the movie to your hard disk. DownloadHelper works on YouTube, MySpace, Google videos, DailyMotion, Porkolt, iFilm, DreamHost and many others: check here for a longer list of supported sites.

It is also possible to capture all the images from a gallery in a single operation.


Play your newly captured flash file with mplayer or IrfanView.

Here is a post with stand alone FLV players:
http://thinkbiggar.blogspot.com/2007/12/wimpy-yes-flashy-no-free-flv-players.html