Flash animation in Freehand is not as easy as in Flash but for simple projects it can get the job done. You can animate objects by use of layers. You create a graphic, a circle for example. Then you duplicate it and change the color and size. Now to animate it use the blend tool to create the tweening shapes.
All shapes exist on a single layer.
You can now export the file in swf format or to Flash as a series of frames. You can also add URL links. But Freehand is in no way a replacement for Flash. It has no timeline, no action scripting and no audio capability. But Freehand is an excellent tool for creating swf graphics that can be placed in an existing Web page or imported into Flash.