Answer: syncs

AnswerCrossword Clue
SYNCS

Updates the music on, as an iPod

SYNCS

Matches sounds to the picture

SYNCS

Makes lips fit music

SYNCS
Causes to coincide
SYNCS
Harmonizes
SYNCSAdjusts soundtracks
SYNCSMatches exactly, briefly
SYNCSAligns
SYNCSMatches audio to video, say
SYNCSLip-..: mouths the words
SYNCSDoes a film editing job
SYNCSCauses to agree, as watches
SYNCSBrings into harmony
SYNCSLip ... (emulates Milli Vanilli)
SYNCSSings together?
SYNCSMakes harmonious
SYNCSMatches up
SYNCSAligns, for short
SYNCSPuts in phase, briefly
SYNCSMatches up, as audio and video
SYNCSAligns, temporally
SYNCSHarmonizes, as watch times
SYNCSLip-...
SYNCSLip-... (fakes it)
SYNCSDoes a film editor's job
SYNCSGets together, informally
SYNCSLip-... (fakes singing)
SYNCSGets it together?
SYNCSLip-... (doesn't really sing)
SYNCSMatches, as tracks
SYNCSMakes match up
SYNCSMatches, as two tapes
SYNCSMatches
SYNCSMatches timewise, informally
SYNCSAligns, briefly
SYNCSHarmonizes, as digital devices
SYNCSMatches up, as files
SYNCSBrings together
SYNCS... up (coordinates)
SYNCSAligns in harmony