只要你拥有Flex Builder 3序列号，就可以通过最下面的网址免费获得Flash Builder Beta版序列号。在这位朋友的博客（www.puxiao.com/?p=357）上发现这个消息的。当我得知这个网址后，发现https://freeriatools.adobe.com 这个网址上还可以免费获得其它产品的序列号，这二级域名也提示这个了：Free AIR Tools。看来以后得常关注这个页面。
马上取得Flash Builder Beta序列号 ：https://freeriatools.adobe.com/flashbuilder4beta/
你将会收到如下邮件 （这是我收到的）：
Dear Y Boy
Thank you for your continued participation in the Adobe Flash Builder 4 public beta. Please enter the serial number listed below into your Flash Builder 4 beta software to continue using it. Please remember that this is beta software and there will be bugs, incomplete features, some performance issues and documentation issues, so we suggest that you only use it for testing and exploratory purposes.
Beta Extension Serial Number : 1377-4009-6596-2357-9400-4885
You can learn more about the beta release using these resources:
- Using Adobe Flash Builder 4 contains usage information for Flash Builder 4, including descriptions and instructions for Flash Builder 4 features.
- The Adobe Flex 4 Features and Migration Guide will help you understand how to migrate Flex 3 framework applications to the Flex 4 framework.
- Flex 4 Language Reference
- Creating Data-Driven Applications with Flex 4
- Using Adobe Flex 4
- Flash Builder Tutorials
- Watch these videos introductions.
Thank you,
The Flex Product Team
