Stringed instrument spoils broadcast (4)
I believe the answer is:
lute
'stringed instrument' is the definition.
(lute is a type of stringed instrument)
'spoils broadcast' is the wordplay.
'spoils' becomes 'loot' (both can mean a reward or proceeds).
'broadcast' indicates a 'sounds like' (homophone) clue (how the word might sound on the radio or TV).
'loot' is a homophone of 'LUTE'.
(Other definitions for lute that I've seen before include "Subject to drugs" , "instrument that minstrel played" , "Old plucked instrument" , "Old stringed instrument with a pear-shaped body" , "Play instrument" .)