Right-click on the page where your Flash movie is embedded.
Select "View Page Info" from the drop-down menu. Navigating to "Tools", then "Page Info" will have the same effect.
Select the Media tab from the window's navigation bar. The window will show a list of embedded media.
Search for a file ending in ".flv" or ".swf".
Select the file, and choose "Save As".
Choose the folder where you wish to save your file, and hit "OK" in the menu.
Download and install a copy of Flashget. See the Resources below for a link.
Navigate to the page where the Flash movie is embedded.
Navigate to "View", then "Page Source". Find the file ending in .swf or .flv.
Open Flashget and hit the New button in the top left-hand corner of the window.
Place the .swf or .flv URL you found in Step 4 and place it in the URL field.
Select the folder where you wish the file to be saved and select "OK".