Cabals can re-edit a classic film (10)
I believe the answer is:
casablanca
'film' is the definition.
(I have seen 'romantic movie' mean 'casablanca' so perhaps 'movie' could also mean 'casablanca')
'cabals can re-edit a classic' is the wordplay.
I cannot really see how this works, but
an anagram of 'cabals' is 'casabl' which is located in the answer.
an anagram of 'can' is 'anc' which is within the answer.
'a' is within the answer.
This accounts for all the letters.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for casablanca that I've seen before include "Major city of Morocco" , "City and port of Morocco" , "Famous Bogart film" , "romantic movie" , "Moroccan city; film" .)