Why won't my Galaxy Note 3 play sound on videos?

[AC Question]

Why won't my Galaxy Note 3 play sound on videos

My Note 3 is new (insurance replacement for Note 2 with broken screen) and won't play sound on videos across all apps including YouTube, Facebook, HBO Go, and short video clips from my personal gallery.

I've adjusted all levels, restarted, cleared the cache, etc.

 

[SpookDroid]

Re: Why won't my Galaxy Note 3 play sound on videos

Do you get ANY sound from other sources?
Try this. If a music file plays fine, try playing that first, THEN try playing a YouTube video while the music is playing. Does it play correctly? Does it stop the sound?