ESPN article that seems to explain this weird tweet: http://www.espn.com/nba/story/_/id/18640447/phil%C2%A0jackson-tweets%C2%A0shot%C2%A0at%C2%A0carmelo-anthony-escalates-feud

He is using something called a Digital Vinyl System (DVS). The vinyl on the turntables have a special signal that is used by the software running on his laptop. This allows him to manipulate the music playing in the DJ software as if it was really on the vinyl. This technology allows DJs to carry tons of music on a…