Where do I get the plug-in required to run the tutorials on the jazz.net site?

For me it uses the Adobe Flash player.

Can you tell me what about what you are looking at?  Are you referring to the knowledge center? (example: https://jazz.net/help-dev/clm/index.jsp?re=1&topic=/com.ibm.rational.rrm.calm.tutorial.doc/topics/rrc_calm_tut_abstract.html&scope=null)
Have you considered running the tutorials on developer works?
http://www.ibm.com/developerworks/rational/library/rational-doors-next-generation-getting-started/tutorial/index.html