Utube sound on MacAir not working since update.

[atlantalady]

The sound is fine unless I go to Utube which uses Adobe Flash player. I can't find a solution on Apple. This happened two days ago since I downloaded update on Adobe Flashplayer. It is very annoying.

[C_F_McBlob]

It has NOTHING WHATSOEVER to do with Flash Player. Google, who owns and runs YouTube, has acknowledged a code glitch that's muting all their videos. Mouse over the speaker icon and the volume slider appears to the right. Until they fix their code, you'll have to set it manually.