Rob Glaser has resigned his position as CEO of Rhapsody parent company RealNetworks. He will retain his role as chairman of the board. Taking his place is Robert Kimball, who will serve as president and acting CEO. Kimball was most recently general counsel and executive VP of corporate development.

From the release:
"After nearly 16 years, I've decided it's time for me to step away from day-to-day operations," said Glaser. "I'm grateful to all of our stakeholders - customers, partners, shareholders, and most of all, employees - for the support and commitment they've given to RealNetworks. I remain committed to the company and look forward to continuing to serve in my capacity as board chairman."

Michael Lunsford, executive VP of strategic ventures officially is the executive in charge of Rhapsody. But Glaser was widely said to play a guiding role, particularly after Michael Bloom left his position in May 2008 as GM of the Rhapsody America joint venture. Rhapsody America consists of Rhapsody elements of the MTVs former Urge music service.

A recent SEC filing states that RealNetworks and MTV are in the midst of renegotiating the terms of the Rhapsody America joint venture, which could include a change in majority ownership - currently held by RealNetworks - or an outright sale.

Glaser's move was preceded by the resignation earlier this week of COO John Giamatteo.