What he said. Not that it wouldn't have been fun to have a veiled cameo of the Wiliams theme at some point, if only in the end credits or something. But this is a totally different film that requires a totally different music aesthetic. I'm perfectly fine with omitting the famous theme in this case. The Williams score and theme aren't going anywhere.
"Christoph Waltz has been set to star in The Zero Theorem, the next film to be directed by Terry Gilliam. Waltz will play Qohen Leth, an eccentric and reclusive computer genius plagued with existential angst who works on a mysterious project aimed at discovering the purpose of existence—or the lack thereof—once and for all." http://www.deadline....oltage-selling/