Yahoo Music head David Goldberg and GM Robert Roback announced they were leaving the Web portal’s music service to return to their “entrepreneurial roots,” according to InformationWeek.

The announcement came shortly after Goldberg made a few headlines of his own by speaking out against digital rights management technology.

Goldberg told SiliconValleyWatcher that Yahoo Music’s experiments selling unprotected MP3s had increased sales, and that he had long favored eliminating DRM from online sales.

“I’ve long advocated removing DRM on music because there is already a lot of music available without DRM, and it just makes things more complicated for the user,” said Goldberg, who also complained that the Microsoft DRM used on Yahoo Music “doesn’t work half the time.”

Yahoo has not commented on Goldberg’s remarks. Both Goldberg and Roback joined Yahoo when it acquired Launch Media in 2001.