Wow, this is really sharp-looking stuff. I like Flash for this kind of one-window interface - very responsive. Certain other sites have a UI that's like slogging through mashed potatoes. Good work. Say, I'd like to experiment with Flash stuff but I have to admit I am totally Macromedia-illiterate. Does anyone know what tools are used to build apps like this?
For maximum flexible development, use Adobe's Flash IDE itself. Flex is a watered down version of Flash IDE for quick development.Using Flex is recommended only if you cant afford an Actionscript developer. [Actionscript 3 is written almost like Java ]