Hulu -- no sound?

I haven't had any problems watching Hulu using Firefox3, but I did have the occasional problem with sound on Firefox2.x.

In the earlier version, I sometimes had to un-install and re-install the flash add-on. Anyhow, since upgrading to Firefox 3. (now 3.1), I've had no problems.

...but for those watching Hulu with no sound, here is more help.
http://getsatisfaction.com/hulu/topics/obtain_picture_but_no_sound_on_free_video