The video was posted to Facebook overnight (but has since been pulled before being re-uploaded to YouTube), and shows Dre celebrating in his studio. At one point, Dr. Dre describes himself as "the first billionaire in hip hop." Gibson reiterates the $3.2 billion figure mentioned yesterday, adding that Forbes ought revise its list of the world's richest people, because Dre is now in the "billionaire boys club."
It's worth noting that Dre doesn't explicitly confirm the acquisition, but the implication here is that it's a done deal. You can watch the full video above, though be warned that there are some naughty word in use. [Facebook via The Verge]