You can make animations within animations. After turning an object into a symbol (movie clip), you can go INTO the symbol and make the animation. You can animate one MORE time by going INTO the symbol again (which would be symbol 2) and animate again. Like inception.
f5 - insert blank frame
f6 - insert keyframe
cmd + B - break apart (like ungrouping)
cmd + shift + d - distribute the separate parts to separate layers
when centering an object, cut (cmd x) and press cmd + 2, then cmd + 1, and paste.