Adobe has released version 9 of the Flash Player. Currently, I develop for versions 7 and 8, and now 9. Do you test your code in various versions of the Flash Player? You should. Here's how to install them for testing.

Uninstalling Your Current Flash Player

Adobe has created an exe for uninstalling your current version of the Flash Player. The exe makes life simple. It uninstalls both the plug-in and the ActiveX control versions, and it's faster than using the Control Panel in Windows, for example. Use

How to uninstall the Adobe Flash Player plug-in and ActiveX control

Installing a Particular Version of the Flash Player for Testing

Adobe (formerly, Macromedia) maintains a page of archived installers for major versions of the Flash Player. Just download the installer for each version of the player you want to test. Each installer contains both the Windows ActiveX Control (Internet Explorer) and plug-in (Mozilla) and the Mac installer.

Windows and Mac Installers

Archived Macromedia Flash Players available for testing purposes

Linux, Solaris, Pocket PC

Web Players (Flash)