We've received reports that sound is cutting off from both video and audio content with some Flash content using Flash Player 11.7.700.169 (and 11.7.700.179). I apologize to those effected by this bug. We've been able to reproduce the issue internally and are currently investigating the cause and possible fixes and workarounds. If you haven't already, please take a minute and let us know how this issue impacts you by leaving a short comment (or vote) on this bug report:
https://bugbase.adobe.com/index.cfm?event=bug&id=3539635
Your feedback is important to us and we will continue to update the bug report as new information becomes available.
For those looking for an immediate fix, you can either update to our latest beta (4/30/2013 - Flash Player 11.7.700.197 Beta) or you can downgrading Flash Player to our latest 10.3 release. The latest 10.3.183.75 build contains all of the recent security updates and should provide a stable platform for both audio and video. Please see these two faqs for details.
How do I revert to a previous version of Flash Player?
Where can I find direct downloads of Flash Player 10.3 for Windows or Macintosh?
In addition, Google Chrome users will need to switch to the system version of Flash Player (NPAPI version) after installing the 10.3 release:
http://helpx.adobe.com/flash-player/kb/enable-system-flash-player-goog le-chrome.html
The next official update, currently scheduled for release in mid May, will resolve this bug.
Thanks,
Chris