There is no reason whatsoever to believe that Bin Laden’s tapes are authentic
http://www.aljazeera.com/cgi-bin/conspiracy_theory/fullstory.asp?id=291

America’s Top Bin Laden Expert: Osama’s Dead, the Tape is Phony http://mujca.com/osama.htm

Osama bin Laden:
A dead nemesis perpetuated by the US government http://www.whatreallyhappened.com/osama_dead.html

Bin Laden tapes are as phony as Sept. 11's connection to Islam
http://www.unknownnews.org/060214a-Barrett.html