Best way to switch between multiple versions of the Flash player for easier testing?

Are there any utilities or browser plugins that let you easily switch the version of the Flash player that is being used?

From stackoverflow Daniel R.

• Found the following: http://www.google.be/search?q=firefox%20switch%20flash%20version

  http://www.sephiroth.it/weblog/archives/2006/10/flash_switcher_for_firefox.php (seems nice)

  http://www.communitymx.com/content/article.cfm?page=2&cid=6FBA7 (seems nicely integrated as well)

  https://addons.mozilla.org/nl/firefox/addon/5044 (from mozilla.org, must be good :p)

  From David Cumps

• For Firefox 3.x on Window XP, Ubutntu Linux, and Mac OS X (Tiger and Leopard), Flash Switcher works well.

  David Cumps : Funny, that's the link I pasted before you :p
  From Daniel R.