Lots of people want to know how to get Apache Flex to work with the various IDEs.
Here are the ways I know of for Flash Builder: 1. Use Om's tool described in https://issues.apache.org/jira/browse/FLEX-33106 to download the Flex SDK and all the necessary pieces and construct a new Apache Flex SDK integrated with Adobe AIR and Adobe Flash Player and the other necessary pieces. 2. If you are using a bin kit, you can use the script in it at ide/flashbuilder/makeApacheFlexForFlashBuilder.bat or makeApacheFlexForFlashBuilder.sh to build a new SDK. The script takes one argument which is the path to the directory for the new integrated SDK. It will use the contents of the bin kit as the Flex SDK and copy it to the new directory location. 3. If you are using a source kit, you can build the sources with 'ant main framework-rsls' and then cd to ide/flashbuilder and run 'ant make-sdk' which puts the Flash Builder pieces into place. 4. If you are doing development and don't mind polluting your svn tree, you also do #3. The advantage is that it is easy to write/debug your code and use svn to see what you changed. The disadvantage is you have to be careful not to commit flex-config.xml, air-config.xml and airmobile-config.xml which are modified to work with Flash Builder. ide/flashbuilder/README_integration_with_Adobe_FlashBuilder.txt documents the files that Flash Builder looks for to determine if a directory structure is a "Flex SDK". Carol