can i say something? make arm in movieClip, three frames: normal, in center and in the end of song (just normally sliding). then youve got to take your fps, and mp3 lenght in secs, and make the simple algorithm:
arm MC fps = MP3 lenght in secs / 3 (frames in movie clip)
so that should give you arm scrolling through whole song. But i dont know is it possible...
