Answer: DUBIN

AnswerCrossword Clue
DUBINAdd to a film, as narration
DUBINDo some film editing with voices
DUBINAppend, as movie sound effects
DUBINAdd, as dialogue or music.
DUBINAdd voices to film.
DUBINInsert (music, dialogue, etc.).
DUBINAdd sound to
DUBINSubstitute a voice on a soundtrack
DUBINAdd to a film, as music
DUBINSubstitute, as words
DUBINAdd later, as sound