Decompiler Trillix's Office 2007-like interface is quite simple to use. As a matter of fact, after Adobe nee Macromedia's context-challenged interfaces it's a breath of fresh air. There are three panes: a file explorer, preview/attributes, and a list of open files and the elements they contain. The file explorer may be hidden but will pop open when you roll the mouse over it. My only complaint is that unlike Office 2007, Decompiler Trillix can't minimize the function ribbon to gain more work area.
Decompiler Trillix will try to install browser extensions for both Internet Explorer and Firefox that allow you to save flash files found on the Web. The IE extension installed fine. Unfortunately, the latest version of Firefox wouldn't accept it since the extension "doesn't install secure updates." See for an extension that will work.
There's a plethora of Flash-related capture, editing, and creation tools out there, but Decompiler Trillix is one you should definitely take a look at. If you're interested in collecting and converting content, it's worth looking at.