Bring in listener before end of bulletin (4)
I believe the answer is:
earn
'bring in' is the definition.
('earn' can be a synonym of 'bring in')
'listener before end of bulletin' is the wordplay.
'listener' becomes 'ear' (I've seen this before).
'before' says to put letters next to each other.
'end of' says to take the final letters.
The last letter of 'bulletin' is 'n'.
'ear'+'n'='EARN'
(Other definitions for earn that I've seen before include "Deserve - merit" , "Acquire by ones' effort" , "Bring home" , "Twist out of shape" , "Gain (money, reputation, etc)" .)