http://www.alice.org/community/showt...ighlight=sonic
Just go to this link. Someone posted a sonic world before. Open up the world then in the object list on the left side, you should be able to right click and save the object onto your computer.
If you are stuck on a project, check out the tutorials I made here at this link:
http://alice.org/community/showthread.php?p=36778#post36778
There are lots of tutorials on it so far, including some youtube videos, check it out
Or..
Go to my youtube channel to check out my alice 2.2 tutorials I have there..
http://www.youtube.com/user/sfunk1992?feature=mhsn