Bit of silence for the audience (5)
I believe the answer is:
piece
'bit of' is the definition.
(I've seen this before)
'silence for the audience' is the wordplay.
'silence' becomes 'peace' (I've seen this in another clue).
'for the audience' shows a homophone (sound like) (how an audience might hear it).
'peace' is a homophone of 'PIECE'.
(Other definitions for piece that I've seen before include "king or queen?" , "One part of a whole" , "Castle, perhaps" , "Separate part of a whole" , "King, perhaps" .)