The Oprah Winfrey Network is undergoing yet another exec shuffle.

In the latest round of musical chairs at the cabler, which has yet to launch, Jamila Hunter is stepping down as head of programming and moving to a development job.

Programming at the cabler is now expected to be overseen by former MTV execs Rod Aissa, Michele Dix and Drew Tappon, who will report to recently installed chief creative officer Lisa Erspamer.

Erspamer, a longtime Harpo exec, moved to the net late last year. OWN declined to comment on the latest news.

Under the setup, Aissa and Dix will handle primetime fare for the channel — a joint venture between Discovery Communications and Winfrey’s Harpo banner — while Tappon will focus on daytime. The exec trio all worked in various capacities at MTV Networks during OWN chief executive officer Christina Norman’s lengthy tenure there.

Hunter joined OWN in June as the channel’s original group of executives departed — including Robin Schwartz, who originally headed up development for the channel. According to those familiar with the switch, Hunter and the channel’s execs felt management duties weren’t the right fit for her, and that she preferred to return to the day-to-day work of developing shows.

Aissa’s resume includes a stint at Katalyst Films, while Dix, who was already working for OWN, handled events such as the Video Music Awards at MTV and sister VH1. Tappon was most recently at Warner Horizon TV.

OWN will unveil its new programming at Discovery’s upfront presentation next month. Cabler is still set to launch in January 2011.