Sound from hen can possibly lead to laying (7)
I believe the answer is:
channel
'sound' is the definition.
('channel' can be a synonym of 'sound')
'hen can possibly lead to laying' is the wordplay.
'possibly' is an anagram indicator.
'lead to' says to take the initial letters.
The initial letter of 'laying' is 'l'.
'hen'+'can'='hencan'
'hencan' with letters rearranged gives 'channe'.
'channe'+'l'='CHANNEL'
'from' acts as a link.
(Other definitions for channel that I've seen before include "Television station" , "BBC1, say" , "Passage for fluid or communication" , "Length of water; radio station" , "vehicle" .)