As for this tape, I'm sure Al-Jazeera had to play it (despite our efforts to get them to shut OBL down). They have probably been paid well, and also threatened if they don't do AQ's bidding.
Thanks for your post, seems we are the only two people who heard him say those words, and were "unnerved".
Whereas I hope nothing happens, it bothers me that not one of all the talking heads on tv, can be less matter of fact about what these two guys did which is "threaten" our national security.
Al Qaeda has used bin Laden videos as a trigger for past attacks.