Run live broadcast, screening it worldwide (9)
I believe the answer is:
universal
'worldwide' is the definition.
(I know that worldwide can be written as universal)
'run live broadcast screening it' is the wordplay.
'broadcast' indicates an anagram (letters scattered or cast around).
'screening' is an insertion indicator (inserted letters are covered or screened by others).
'it' becomes 'sa' (SA can mean sex appeal, as in 'it').
'run'+'live'='runlive'
'runlive' anagrammed gives 'univerl'.
'univerl' enclosing 'sa' is 'UNIVERSAL'.
(Other definitions for universal that I've seen before include "wide-ranging and comprehensive" , "Of worldwide scope" , "Everywhere applicable" , "Common" , "All-inclusive" .)