Two questions regard the new Unity XR Plugin

I'm trying to find out how to do play audio when using the new Unity XR Plugin.I tried searching on DuckDuckGo and all the tutorials I found were related to the official Oculus integration and not the Unity XR plugin. I also found this documentation, but not sure how to get started.

Oh and one last question if you don't mind: is it okay using both the Unity XR Plugin and also importing the Oculus Native integration? I'm asking because I'd love to use the hand tracking too.

Thanks!