The Collaborative International Dictionary of English v.0.48:

Changer \Chan"ger\, n.
   1. One who changes or alters the form of anything.
      [1913 Webster]

   2. One who deals in or changes money. --John ii. 14.
      [1913 Webster]

   3. One apt to change; an inconstant person.
      [1913 Webster]

   4. an electronic device which changes one replaceable medium
      for another, such as a record changer, which can store
      several records and move each one automatically to the
      playing table; or a CD changer, whch can store multiple
      compact disks and move each one to the reading slot, in a
      sequence determined by the user.
      [PJC]

WordNet (r) 3.0 (2006):

record changer
    n 1: an automatic mechanical device on a record player that
         causes new records to be played without manual intervention
         [syn: record changer, auto-changer, changer]

Moby Thesaurus II by Grady Ward, 1.0:

45 Moby Thesaurus words for "record changer":
   Gramophone, PA, PA system, Victrola, audio sound system,
   audiophile, binaural system, bitch box, bullhorn, cartridge,
   ceramic pickup, changer, crystal pickup,
   derived four-channel system, discrete four-channel system,
   four-channel stereo system, hi-fi, hi-fi fan, high-fidelity,
   intercom, intercommunication system, jukebox, magnetic pickup,
   monaural system, mono, needle, nickelodeon, phonograph,
   photoelectric pickup, pickup, public-address system,
   quadraphonic sound system, radio-phonograph combination,
   record player, sound reproduction system, sound truck, squawk box,
   stereo, stylus, system, tape deck, tape recorder, tone arm,
   transcription turntable, turntable