Copyright and Fair Use LR

Question 18 deals with the use of music in a presentation and the length that is allowed. The problem with using music in presentations is the royalty fees that are associated with the copyright and fair use of music. It boils down in my mind to greed. If a student wants to use popular music in a presentation that is not being distributed and the music was found in a legitimate way then they should be able to use as much as they want as long as they give credit at the end of their presentation. It is kind of stupid that musicians are greedy enough to want royalty fees for everything. Through the distribution of their music they can actually gain more money because who is to say that a student hearing the music in a class presentation is not going to go buy their music and also the license that you get to listen to the music if you get it legitimately should cover using it in a presentation without distributing the music afterword.