Two things to add, the sound quality isn't great, you may have to adjust your speakers and EQ. Also most of it refers to the slides so it doesn't have quite the same effect just as an audio file.
He does however have interesting things to say about the dating of the RA, being pre-passage tomb Neolithic or even earlier than that! Associations with the bronze age are because of it's re-use in later monuments and the failure to reasses the date of RA after radiocarbon dating pushed back the date of passage tomb art. Any thoughts on this?
