If your wikipedia link is more reliable (as your other thread suggests) then I would point to it as well:

On October 29, 2004, two days before the US elections, the Arab television network al Jazeera broadcast a videotape apparently showing bin Laden addressing the people of the United States. In this video he appears to take credit for the idea to attack the WTC towers. He also condemns the Bush government's response to the attacks, and presents the attacks as part of a campaign of revenge and deterrence begun after personally seeing the destruction of the Lebanese Civil War in 1982. See 2004 Osama bin Laden video.

and

On 23 May 2006, another audiotape purportedly of bin Laden surfaced on the Internet. On the tape b>bin Laden claims that it was he alone who assigned the hijackers to perform the September 11, 2001 attacks on the United States and that I am the one in charge of the 19 brothers and I never assigned brother Zacarias to be with them in that mission. I am certain of what I say because I was responsible for entrusting the 19 brothers ... with the raids," said bin Laden who was speaking about the 9/11 hijackers. He also claimed that all of the detainees held at Guantanamo Bay had nothing to do with the September 11th attacks"

http://en.wikipedia.org/wiki/Osama_tapes


>>snip
>>>What is NOT all that direct and well proven is the link between OBL and 9/11.
>>
>>A Video tape of OBL admitting to being responsible for the 9/11 attacks is not enough?
>>
>>http://www.telegraph.co.uk/news/main.jhtml?xml=/news/2001/11/11/wbin11.xml
>>http://www.usatoday.com/news/world/2006-09-07-qaeda-tape_x.htm
>>http://www.washingtonpost.com/wp-dyn/content/article/2006/09/07/AR2006090700763.html?nav=rss_nation
>
>
>OBL denial from Wikipedia : http://en.wikipedia.org/wiki/Osama_tapes
>-----------------------------------------------------
>Denial Bin Laden
>Bin Laden denied involvement with the 9/11 attacks five days later on the Al-Jazeera satellite channel:
>
>"I stress that I have not carried out this act, which appears to have been carried out by individuals with their own motivation ... "
>
>This denial was broadcasted worldwide, but the Bush administration urged media in the U.S. not to show the video since it might contain secret signals to Al Qaeda terrorists.
>
>On September 28, 2001 in the Pakistani newspaper Daily Ummat [7], bin Laden again denied any involvement with the attacks, and suggested he was being framed:
>
>"I have already said that I am not involved in the 11 September attacks in the United States. As a Muslim, I try my best to avoid telling a lie. I had no knowledge of these attacks, nor do I consider the killing of innocent women, children and other humans as a appreciable act. Islam strictly forbids causing harm to innocent women, children and other people ..."
>"There exists a government within the government of the United States. That secret government must be asked as to who carried out these attacks. The United States should trace the perpetrators of these attacks to those persons who want to make the present century a century of conflict between Islam and Christianity so that their own nation could surivive."
>
>--------------------------------------------------------
>
>But of course source (Pakistani Daily Ummat) is not as reliable as US Defence Dpt.