Apparently, the Bin Laden tape was originally 18 minutes long, but only 5 minutes was aired. Also, it had English subtitles. Al-Jazeera have published the English transcript.
With one's prejudice aside, it's actually a very powerful speech. I personally object to the constant mentioning of Allah (as I dislike anyone using religious ties to bias their point). That aside though, it's a pretty balanced and incisive commentary. It interesting to see how OBL feels his plan is going, and indeed it's possible future.
All said and done though, it's the other side of an argument which neither side can understand or agree on.Read Salt by Adam Roberts.