1
general::
Phrase(s): play something back (to someone)
to play a recording to someone. • Can you play the speech back to me? • Please play back the speech to me, so I can hear how I sound.
McGrawhill's American Idioms And Phrasal Verbs
2
general::
Replay, especially a recorded performance; also, repeat. For example, When we played back the tape of the concert we noticed a lot of missed notes, or He uses the same material again and again, playing back his old speech. [Early 1900s]
American Heritage Idioms