No sound in Adobe Premiere Pro CC 2017
Ok, here is answer. 
Quote: 


  Please clear the Media Cache (keeping Premiere Pro closed). Find
  instructions here: FAQ: How to clean media cache files?
  
  Navigate to the Media Cache location as specified in the Premiere Pro
  preferences and rename the folders.

   MAC: Premiere Pro menu&gt;Preferences&gt;Media
   Windows: Edit Menu&gt;Preferences&gt;Media

  
  Please reply if your issue gets resolved after trying these steps.
  
  NOTE: Premiere Pro will conform all files after opening any/all
  project(s) and will generate the peak file for the audio. This might
  take long depending upon the number of Media used in the project(s).