Audibly supervises abroad (8)
I believe the answer is:
overseas
'abroad' is the definition.
(both can mean in another country)
'audibly supervises' is the wordplay.
'audibly' indicates a 'sounds like' (homophone) clue.
'supervises' becomes 'oversees' ('oversee' can be a synonym of 'supervise').
'oversees' sounds like 'OVERSEAS'.
(Other definitions for overseas that I've seen before include "In a foreign country" , "Exotic" , "abroad - with 12a" , "In foreign parts" .)