audio has stopped working

It was working until it stopped working.  Now, when I hit the blue "play" button, I get awarded the points but there is no sound.  Also, "Play It" still works and still award points but there is no audio.  Nothing has changed on my system and I am using Google Chrome.

I rebooted my computer and everything is working now.  Flash (Shockwave) had gotten unstable so I figured a reboot was in order.