MTV Interactive has upped Justin Herz to senior veep and general manager of music site SonicNet.com.

Herz will oversee the growth and direction of SonicNet.com and Radio SonicNet, reporting directly to MTVi prexy and CEO Nicholas Butterworth.

He will also be responsible for SonicNet’s affiliate sites, including Addicted to Noise, Streamland.com, Trouserpress.com and Cinemachine.com.

“I’m proud to have Justin Herz leading the new SonicNet.com because he truly understands both the opportunity and the promise of online music and how to deliver it to consumers,” Butterworth said.

MTVi, which includes MTV.com, VH1.com and SonicNet, is a division of MTV Networks Online.

SonicNet.com offers Netizens digital music files in genres from classical to rock, as well as reviews, news and musicvids.

It also features Radio SonicNet.com, allowing listeners to select from a wide variety of pre-programmed radio stations. Listeners can also program their own personalized stations by choosing from a genre play list.

“On SonicNet.com fans get direct access to the music they love plus in-depth information on tens of thousands of artists,” Herz said. “Backed by the global reach of the MTV and VH1 television networks, the new SonicNet.com is a perfect platform for all artists to promote their music.”

Herz was head of MTV.com’s production group for the past four years.