Censor almost ruined recording (5)
I believe the answer is:
bleep
'censor' is the definition.
(I've seen this before)
'almost ruined recording' is the wordplay.
'almost' means to remove the last letter (most of the word but not all of it).
'ruined' becomes 'blew'.
'recording' becomes 'ep' (extended play vinyl record).
'blew' with its final letter taken off is 'ble'.
'ble'+'ep'='BLEEP'
(Other definitions for bleep that I've seen before include "High pitched signal" , "(Alarm) pulse" , "Electronic alarm sound" , "Censor" , "Page" .)