I'm don't know anything about it so I sent this page to a friend and musician { a Harvard grad AND a banjo player }who teaches theology at a local university and his reply was -

" This one is a stretch - there are enigmatic words in the psalms like _selah_ that scholars believe were instructions for singing, but the punctuation marks that are mentioned in the article are clearly that - punctuation marks. There's no scholarly basis for her claims but I'm sure it's effective in selling CD's. "