I have never seen this film, but guessed you may be hearing (kirikirikiri). I tried typing into google to see what would happen, and it autocompleted to (Audition) so I think this is your answer for how to correctly write it in romaji. Here is the google search.
As for what it means, Chocolate says that it is an onomatopoeia, which according to this giongo list possibly meaning 'a sharp drilling pain' which sounds relevant for the context.
As an aside, the 'tt' consonant in American English 'kitty' happens to sound similar to Japanese r, which I think is why you heard it that way.