Here’s a roundup of the Flash extensions that I use on a regular basis. Boost your productivity with these handy extensions.
To use them you need Macromedia Extension Manager and Flash MX 2004. To install, just download and run the MXP file, then restart
Flash. Most of these extensions will add an item in Flash’s ‘Command’
menu.
Add Stop frames. Creates a Stop action in the selected frame. Joy!
Distribute to Frames. Takes all the elements in the selected frame, and places them sequentially in the layer.
Duplicate Layer. Does what it says on the tin.
Duplicate Folder: Doesn’t work for nested folders.
Frame to Symbols. Makes all elements in the selected frame into library symbols.
Library Manager Extension. This adds a menu item in your Window->Other Panels menu. The Library Manager shows all your library symbols as a list, and allows you to manage multiple export and linkage options.

Latest Tweets
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I think my favorite is “Instance _setMcName”. It’ll set the instance name on the stage to the symbol name in the library. Very handy if you want to type the name just once.
I usually have to search for it on the Macromedia Exchange, but you should put it here. 😉