It's interesting Zombie... all those audios are from Ahmed Deedat, who amongst other things, actually taught that Jesus was in fact crucified. This same understanding was also believed by the Ahmadiyya movement, founded by Mirza Ghulam Ahmad (1839-1908)
They believed that Jesus died on the cross, but did not actually die, but did look as if he had died, was revived and then went to India where he preached the Gospel till he was 120 years old.
Interestingly, Ahmed Deedat in the books "crucifixion or Crucifiction" which are represented in that website, actually popularised that view in those books. He argues that though Jesus was crucified, He did not actually die, and so was not crucified in the full sense of the word.
Needless to say, this puts his thinking in opposition to other more orthodox thinking that Jesus was never on the cross in the first place.
I'll try and listen to a few of these recordings with interest.