Available on DVD
here is a copy available
http://czechmovie.com/d/blaznova-kronika-a-jester-s-tale-dvd-1000262/
I also found one on ebay
http://www.ebay.com/itm/Blaznova-kronika-A-Jesters-Tale-DVD-1964-Adventurous-Comedy-Karel-Zeman-/141490719176?hash=item20f18109c8