Location in sound and vision (5)
I believe the answer is:
sight
'vision' is the definition.
('sight' can be a synonym of 'vision')
'location in sound' is the wordplay.
'location' becomes 'site' (site is a kind of location).
'in sound' indicates a 'sounds like' (homophone) clue.
'site' sounds like 'SIGHT'.
'and' acts as a link.
(Other definitions for sight that I've seen before include "object of especial interest" , "good deal" , "Sense" , "a great deal" , "something to behold" .)