Like to broadcast new author (7)
I believe the answer is:
tolkien
'author' is the definition.
(JRR Tolkien)
'like to broadcast new' is the wordplay.
'broadcast' indicates anagramming the letters (letters scattered or cast around).
'new' becomes 'n' (common abbreviation eg NT for New Testament).
'like'+'to'='liketo'
'liketo' anagrammed gives 'tolkie'.
'tolkie'+'n'='TOLKIEN'
(Other definitions for tolkien that I've seen before include "Author of The Hobbit, d.1973" , "British writer, d. 1973, known for fantasy adventures" , "story-teller" , "JRR ---, fantasy writer" , "Author of fantasy" .)