I really don't post much but I do watch movies and I am guessing you are referring to Phoenix talk radio ... Interesting take on many different topics of life and of course the dinar. The matrix he refers to is tiny bits of truth that you can find in what he calls the "matrix" amongst all the lies, deceit and smoke that is out in the world.
If you watched the movie the "matrix" you would know that the general population was manipulated in believing they lived in the real world ... going to work ... living lives of non existing substance in what you refer to as a dream state and it was not the "real" world! In the movie ... the real world was destroyed and run in essence by machines. There was human life that existed and lived in a place called "zion" that knew the reality of were they lived. The matrix in the movie was a place of (reality vs fabricated existence ... leaving viewers to wonder if it fact or fiction) where a select few of gifted humans interacted with the machines in a whole different type of environment where they would fight and try to save the world ... good vs evil basically. This is a lot harder to explain than I thought it would be.
I think Phoneix uses the matrix as a metaphor for a place he calls his "truth". You would have to ask him where is truth comes from (example: articles of news, sources etc) I have no idea what the main source of his matrix of information comes from. I am sure he could do a better job of explaining it than I have but thought I would give it a shot and try to help you.