In station, tape's readily available (2,3)
I believe the answer is:
on tap
'readily available' is the definition.
(I've seen this before)
'in station tape's' is the wordplay.
'in' says the answer is hidden in the clue.
'ON TAP' is hidden within 'station tapes'.
(Other definitions for on tap that I've seen before include "Available (for drinking?)" , "where C or H is seen?" , "Immediately available like beer in pub" , "kept in a cask" , "Readily available" .)