Just giving everyone heads up on a current issue with Adobe Flash. For anyone experiencing a lack of audio playback in their videos regardless of which website they visit after updating Flash.

Here is a link to the current update from Adobe staff:

http://forums.adobe.com/thread/1024504?tstart=0

There are other issues as well including videos not playing and displaying an error message as well as Flash crashing. Many have found good results in downgrading to a previous version.