What he means is "I have the ability to explain to white men,why this black music will appeal to white youth. So that they will put money behind it and make it so"
Nothing more and nothing less really. Truthfully Ive spotted more talent before they blew up than Rick Rubin. If only I was in the right circles and knew white people music back in the day. All you gotta say is shyt like "I'm telling you Mark, T.I and this trap music thing? It reminds me of retro Sound Garden ,fortified with the rawness of black pain and an urban twist

"
Mark-"omg,I can totally see it

! Heres 2 million dollars."
In other words hes a bum and a grifter,and not one of the true geniuses of the culture.