The following solution worked for me (From http://ubuntuforums.org/showthread.php?t=543878)
"It comes down to getting alsa to use the right card. Type "asoundconf list"
Then "asoundconf set-default-card INSERTCARDNAMEFROMLISTHERE"
Then alsa has a default card to look for and flash and youtube will work."
-Fernando
The following solution worked for me (From http:// ubuntuforums. org/showthread. php?t=543878)
"It comes down to getting alsa to use the right card.
Type "asoundconf list"
Then "asoundconf set-default-card INSERTCARDNAMEF ROMLISTHERE"
Then alsa has a default card to look for and flash and youtube will work."
-Fernando