For the audio, here is what I hear from the first of the video clip:

     ??? one.

     My name is Art ??? I am the creator
     of Audio???.

     Today I'm excited to show you another
     example of ??? AudioKit live coding
     playground.

     I have been presenting AudioKit at
     ??? universities and I ??? example

He can speak plenty clearly enough, but in places he just drops his voice volume. E.g., for what I heard in "Audio???" it might have been AudioHit, AudioKit, AudioSit, AudioIt, or something else. He just dropped his voice on the last sylable of AudioKit.

For his last name, he again dropped his voice.

"Live coding playground" is clear enough, apparently from "another" there is a prerequisite of earlier examples? And, really, there should be something like:

"The software AudioKit permits finely grained interactive usage with what we call the AudioKit live coding Playground, and we will demonstrate that here."

Okay, that's good.

Then to the computer screen, we're supposed to know that that is on Linux or Apple? We're supposed just to assume that? Observe that? Not good. Instead, just say what the computing platform is.

These are constructive remarks, not "rude".