"These aren't the Flex developers you are looking for..."
Installing Flash Builder Burrito as a plug-in
If you are like me and develop in Java and Flex all day long and Eclipse is your IDE, then most likely you will want to install Flash Builder as a plug-in within Eclipse. Well I just installed the beta version of Flash Builder codenamed "Burrito" and noticed it was installed as a standalone application. After a quick Google search I found the following article, which allowed me to install Burrito as a plug-in within Eclipse in a matter of seconds.
So here is what I did exactly (cause I upgraded my Eclipse version as well):