Broadcast rage-filled promotional material (5)
I believe the answer is:
'broadcast' is the definition.
'rage-filled promotional material' is the wordplay.
'rage' becomes 'ire' (I've seen this before).
'filled' indicates putting letters inside.
'promotional material' becomes 'ad' (ad is a kind of promotional material).
'ire' inserted within 'ad' is 'AIRED'.
(Other definitions for aired that I've seen before include "Put to dry; said publicly" , "Raised" , "Expressed publicly" , "Broadcast; dried" , "Ventilated, or hung out to dry" .)