For people that using Mozilla Firefox as their Internet Browser, you can download some flash file without using any program.
But, just for some flash file, not for all flash file though.
a. Type about:blank in the Firefox address bar
b. Now click List cache entries or directly type about:cache?device=disk (Disk cache device)
c. Press Ctrl+F and try to location the flash file by typing some part of website URL or the flash file name or just .swf. After some hit and trial, you should be able to locate the swf file URL
d. Click the SWF URL to open the Cache Entry Information page. Right click on the link and choose "Save link as"
For Example, I got this one after I open Sakurahana :
[flash width=150 height=300]http://www.sakurahana.com/forum/mikuclock.swf[/flash]
Link : http://www.sakurahana.com/forum/mikuclock.swf
I got it by using it, here is the screen shot :
And for people that using Internet Explorer, try this
a. Click Tools - Internet Options
b. In the General Tab, click the Settings button available in the Temporary Internet Files group.
c. Click View Files to open your Temporary Internet Files folder. Depending upon your IE settings, the Temp. folder can contain tens of thousands of files.
d. Click View - Details. Now click View - Arrange Icons By - Internet Address. Depending upon the webpage, there could one or more Flash files (Shockwave Flash Object) under the Inernet Address.
e. Once you find the right flash file, right-click and choose Copy. Then paste the swf file in any other directory. Be sure to
keep the page and IE open to avoid purging of the cache file
Info Source : http://labnol.blogspot.com/2005/11/save-flash-from-firefox-and-ie.html