Arab citizen with no small love of sound (5)
I believe the answer is:
audio
'of sound' is the definition.
(I've seen this before)
'arab citizen with no small love' is the wordplay.
'arab citizen' becomes 'Saudi' (citizen of Saudi Arabia).
'with no' suggests deleting specific letters.
'small' becomes 's' (abbreviation - e.g. clothes size).
'love' becomes 'o' (love means zero in tennis).
'saudi' with 's' removed is 'audi'.
'audi'+'o'='AUDIO'
(Other definitions for audio that I've seen before include "Acoustic reproduction" , "Relating to sound or hearing" , "in the sound department?" , "What is heard" , "Sound broadcast" .)