You are asking the wrong crowd: people you don't know, and med students who don't know enough about computers.
Universities that use online lectures post them according to an algorithm such as
www.school.edu/lecture/YEARMONTHDAYHOUR.rm. Most medical students do not know what an algorithm is, much less how they could crack it. Further, you aren't going to find anyone here on SDN is willing to break the law by supplying you with a username and password. Your best bet would be to make friends with someone in the IT department at a medical school. Then, get him drunk one day and seduce him for the code or algorithm.