No Sound in OS X When Playing YouTube or Flash
Found a very odd bug on my MacBook Pro - no audio in browser-embedded Flash.
Meaning anything hosted by YouTube is a ’silent’ movie. Sometimes that’s fine. Though, mostly it’s not (especially with the recent unBooming).
I’m always looking for a ‘download’ link, or a QuickTime option - some alternative to the embedded Flash. None to be found. So, YouTube is YoUseless to me.
UPDATE: Peter in the comments pointed me to a MacOSXHints.com page that solved the audio problem (”the voodoo fix of launching and then quitting Garage Band.”) - it’d be nice if I could download the video and not be tied to a browser and internet connect to enjoy them.

8 Comments
I had this problem for a little while on mine at first especially with Firefox. I’m not sure how I fixed it, but somehow I got it to eventually work correctly. I think I downloaded and installed the plug-in about 4 times and then it started to work properly
Garrick — what browser? All of them?
Paul, yes - Safari, Firefox, and Opera.
Garrick, found this thread that might help.
http://forums.macosxhints.com/showthread.php?p=307805
Someone found trashing the Macromedia prefs did the trick.
sadly, i have not found a way to download the video for a mac via firefox browser plugin, but i do know there is one for a PC at https://addons.mozilla.org/firefox/2390/ which works for the mac version of firefox, but sadly, the player to play google and youtube videos is for pc only, unless that has changed in the past month.
Flash on OSX has always sucked. I’ve pretty much disabled it completely on my older TiBook.
Apparently, the latest-greatest flash plug in has fixed a lot of the OSX issues, though I’m so happy with my flash-less web on my Mac, I don’t know if I’ll have the motivation to install it. ;o)
That said, if there was any argument to install it, YouTube would be it.
^the solution is to trash your Flash Player preferences under the ~/Library/Preferences/Macromedia.
what do you mean by that?? where can you find that folder at?
I simply installed the latest version of Flash for intel-based macs and all was well ….
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[…] I was trying to play a YouTube video on a Mac and wasn’t getting any sound. After Googling around, I found that I wasn’t the only one running into this problem and that the solution is to trash your Flash Player preferences under the ~/Library/Preferences/Macromedia. […]
[…] voodoo fix #2: this one I like, launch Garage Band and the audio prob will be fixed, nada […]