New hot Adobe Flash Player 9 got support for H.264 video and High Efficiency AAC audio codecs in the latest update, available in beta on Adobe Labs.
Adobe Labs features prerelease versions of the Flash Player 9 Update software. The beta is an opportunity for developers and consumers to test and provide early feedback to Adobe on [...]
winxp flashplayer9 flash+player sound bug fix youtube video no-sound issue adobe-flash-player nosound flash-nosound You can see alot of posts on adobe flash player forum like
Anything like YouTube, MySpace, that uses Flash to play sound is giving me nothing but sound works for everything else. Uninstalling and reinstalling doesn’t work. Installing an older version doesn’t work. [...]