People who succeed in getting tunes broadcast (5)
I believe the answer is:
heirs
'people who succeed' is the definition.
(an heir succeeds to an inherited position)
'tunes broadcast' is the wordplay.
'tunes' becomes 'airs' (air can mean a piece of music).
'broadcast' shows a homophone (sound like) (how the word might sound on the radio or TV).
'airs' sounds like 'HEIRS'.
'in getting' acts as a link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for heirs that I've seen before include "Inheritors" , "They inherit property or rank" , "Successors" , "They get rank, property etc from others, perhaps their parents" .)