From what I read on the website I get the impression that "free shows" are only for people who have the software and the word free does not mean that the show or any part of it is open source or free to convert to ilda and share or use for other purposes. Someone still owns the intellectual property.
If there was some notion of an open file spec, I could see figuring out how to open it and convert it to ilda. But hacking someone else's IP is not my jam.
James.