We should be releasing our preliminary support for Animation Clips to Clara.io tomorrow. :)
I would then need to be able to programmatically play the animation file from keyframes 0 - 50 for the rotate animation and 75 - 100 for the lean animation for example. Is this functionality possible from the div embedded viewer?
You can do this now. Just set the frame range to the section you want -- use ctx to modify the timeline start/end times. And then play the animation.