Record being played so behind schedule makes you sad (12)
I believe the answer is:
disconsolate
'sad' is the definition.
(I know that sad can be written as disconsolate)
'record being played so behind schedule' is the wordplay.
'record' becomes 'disc' (eg a CD, compact disc).
'being played' becomes 'on' (I've seen this in other clues).
'behind schedule' becomes 'late' (I've seen this before).
'disc'+'on'+'so'+'late'='DISCONSOLATE'
'makes you' is the link.
(Other definitions for disconsolate that I've seen before include "Low in spirits" , "Sad; beyond comfort" , "Melancholy" , "Unhappy and impossible to comfort" , "Very sad or disappointed" .)