Well I am having problems hearing sound in firefox. I can hear sound in Internet Explorer though. The problem happens when I visit sites like youtube and want to watch the video. The video plays but their is no sound. I have updated my flash player according to the instructions found on this site and also tried the troubleshooting suggestions and the problem is still present.
This problem just started this past week. I can see videos but can't hear them on certain sites like YouTube and PlanetPulse at http://www.dailyhoroscope.com/free-horoscopes/videos/planet-pulse-astrology/?feature=dhe-email-tarot.... I don't have the same problem on Bloomberg.com video or any other URL. When I download videos from YouTube to RealPlayer, I can play them with sound all right. I read your Tips for this problem. I uninstalled Adobe Flash and re-installed it not only using FireFox but also using Explorer. I used the 32 & 64 bit version. I even re-booted my computer but nothing helps. I have Windows 7 and the latest version of FireFox. All my FireFox plugins are up to date too. What can I do? This problem just started last week.