It is doooooooone! Made the worlds using Gimp, video editing and effects using After Effects. Damn, that was long. Especially trying to find an easy way to get the pixels ponies working with After Effects...
You can grab the planets files here: http://www.mediafire.com/?e81275j5awr12f3
or there: http://jineb.deviantart.com/#/d5ctfpm  http://jineb.deviantart.com/#/d5ctfwo

Credits:

Music: Around the world chiptune remix by DJ Cutman feat. Electric Children

Vectors (Deviantart artists):
  -trees, apples: a01421, blackgryph0n
  -books, scrolls, quills: snowedearth, thesharp0ne, stinkehund, durpy, m99moron, zutheskunk, theflutterknight, sierraex, knightnew, softfang
  -clouds: grendopony, misteraibo
  -cupcakes, candy cane, balloons: atnezau, sk4545, krazy3, blackgryph0n
  -flowers, butterflies: atnezau, erisgrim, speedingturtle, flausch_katzerl
  -dummy (pony form): adamlhumphreys
  -the MOON! : spiritofthwwolf

Pixel ponies from the desktop ponies community.

"My Little Pony: Friendship is magic" and all trademarks are courtesy of Hasbro, HUB & DHX Media. No infringements upon the rights of Hasbro, HUB or DHX Media intended.