Buttons with motion

  1. Create a movie clip
  2. Create a button
  3. Put the movie clip in any keyframe for the button (Up-Down-Over)

As long as the button is in a state with a movie clip in it, the clip will keep playing

Explanation of the movie clips used in the buttons above:
  what the movie clip looks like which states of the button contain movie clips
the waves move from side to side movie clip inserted in the Over and Down states
the picture spins movie clip inserted in the Over and Down states
the fill rotates side to side in all states