Stu Pflaum, also known as DJ Xplosive is an American music industry figure and digital music pioneer. Based in Cleveland, Ohio, Pflaum has previously worked as consultant to street teams and lifestyle promotions at Asylum Records and Warner Music Group.

Pflaum founded the Element 9 company in 2005 to assist in the development of independent musicians. He was nominated for a Grammy Award in 2008 in the category of Best Rap Song as a music publisher. In 2009, the Element 9 company partnered with Fontana Distribution, the independent distribution arm of Universal Music Group, to release albums from artists signed to the company's record label. Pflaum serves as Vice President for the label.

In 2011, Element 9 made headlines by releasing their album Habits of the Heart from the group Idle Warship (Talib Kweli and Res) exclusively on the Spotify music service three weeks prior to the album's actual street date. The advance release was the first instance in which a United States based music company debuted a project far in advance using the Spotify service and a counterweight to the release strategies of artists such as Coldplay and Adele, who had refused to make their music available through Spotify.

Pflaum is currently pursuing an MBA with a concentration in the Music Industry at the Henley Business School at the University of Reading.