I upgraded to Win 10, and my sound disapeared in google chrome. Sounds and music worked well in all other applications, including computer games and browsers.
After a great deal of uninstalling and reinstalling I found out that the problem was related to the Windows sound control. (Speaker at the lower right corner).
Sound was allowed for all other applications that google chrome. The solution was to click on the sound related to google chrome, and viola sound was restored.
Kind regards Jørgen Ohms