An update to the news posting earlier. Jeff has responded and said that he has been in touch with Jeff Yates of Autodesk, indicating what his intentions were with their software. Jeff was taking their 3D animation package and adding Sim support to it. Autodesk has a policy on their software and released some routines/tools under their own Open Source license. Autodesk seems to be ok with Jeff’s efforts once they get the license agreements signed. The confusion abounded because at no point since the beginning of his development on the product was it ever mentioned that it was a derivative work of Autodesks or that the program would be Open Source (meaning the source code will be released along with the program). Anyways, you can find information on his site here.