Like to be free after tea, having no energy for film (6)
I believe the answer is:
talkie
'film' is the definition.
(talkie is a kind of film)
'like to be free after tea having no energy' is the wordplay.
'to be free' indicates an anagram.
'after' is a charade indicator (letters next to each other).
'having no' indicates named letters should be taken away.
'energy' becomes 'e' (physics symbol as in E=mc2).
'tea' with 'e' taken out is 'ta'.
'like' anagrammed gives 'lkie'.
'lkie' put after 'ta' is 'TALKIE'.
'for' is the link.
(Other definitions for talkie that I've seen before include "See 1 Across" , "may be a Hollywood production" , "Not the first film" , "Early sound film (colloq.)" , "Early film with sound track" .)