Played out an act on the radio (6)
I believe the answer is:
effete
'played out' is the definition.
(thesaurus)
'an act on the radio' is the wordplay.
I cannot quite see how this works, but
'act' could be 'fete' (fete is a kind of act) and 'fete' is present in the answer.
The remaining letters 'ef' is a valid word which might be clued in a way I don't see.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for effete that I've seen before include "Ineffective, decadent" , "Spent; degenerate" , "Over-refined and ineffectual" , "Feeble, weak" , "Feeble, lacking vitality" .)