I don't recieve any sound on my webreader:(

[Xafira]

Ok guys, I'm a total ubuntu noob, just installed it the other day, and now I noticed that I don't recieve any sound while watching vids on youtube.com ect. But I can listen to music with my rhytmbox music player.

Some help or suggestion would be appreciated,thanks.

~Xafira.

[Xafira]

Bump, still have issues with the sound.