Class Inheritance and Communication

Could anyone help me out with this design hurdle I am having? It may be rather simple so here goes:
I have a number of clases built that serve different purposes within my movie; for instance one class parses a csv file and sets an array of the parsed text to a property, another class stores a temporary array that will eventually be sent to a php script, the php script communication is implemented in yet another class. This all works fine, but my question is about inheritance and how it can be implemented so multiple classes can talk to one another. Instead of spreading my actionscript across multiple movie clips on stage, I’d like to render those mcs with a rendermc class and have that take care of everything that appears on stage. but, lets say mc1 need to talk to the parsecsv class and a tempArrayHandler class. It can’t inherit from both to pass their methods variables. How can I accomplish this?