I'd have to check it out further, but I don't think we can. I'm not aware of anyway to add sound to the board, i.e. talking avatars.
I could be wrong though, I'll have to look into it...
well, it says you create it on their site and paste the HTML into your blog/site. I don't know if HTML pasted into avatar or sig sections will work...but it might.
Well, if a bunch of people had these, would they all be talking at once?
Well, looking at my Admin CP, apparently I can set it to allow HTML in sigs, and that is currently disabled. Something called IBF code is enabled, there's no such options for avatars though...