I'm sorry if I offend anyone here, but this whole exercise is getting a little ridiculous. The empeg guys have said that their shuffle algorithm is random, even after repeated accusations of bugs and inaccuracies in it. What are you trying to prove with all this hocus pocus you're doing with random number generation and plotting things on graphs and such? What is the end game if you get results that say "the shuffle algorithm isn't as random as it should be." Are you asking them to take yet another look at the code? Do you want to implement some de-combing of related songs after the shuffle is done? I'm not sure I understand the point here. This Delphi program and all the postulates and the hypotheses... What are we after here?