Quincy Jones and David Salzman spent most of Thursday working feverishly on the Monday premiere of their new latenight strip “Vibe,” even as word surfaced that the pair are in the process of splitting up their QDE partnership.While Jones and Salzman are negotiating their exit from Quincy Jones/David Salzman Entertainment, the four-year-old joint production venture with Time Warner Entertainment, the two plan to remain partners in a range of other business ventures, most notably “Vibe,” which is not associated with QDE. “Our relationship with QDE is such that we have to agree on everything we undertake,” said Salzman. “There have been times when that interferes with other things we would like to do as individuals. The end of QDE only means we won’t be working exclusively together.” Jones is also in business with Salzman’s wife, Sonia, in Qwest Broadcasting, which operates TV stations in Atlanta and New Orleans. QDE slate full QDE’s active program slate includes the syndie talker “Jenny Jones,” the Fox weekend latenight comedy series “Mad TV” and the UPN sitcom “In the House.” Salzman said the pair will continue to be actively involved in those shows, but other details of the QDE divorce remain murky. Jones was not available for comment Thursday; through a spokesman, he denied rumors of strained relations between the longtime friends. Both Jones and Salzman will remain executive producers of “Vibe,” along with showrunner Daniel Kellison. “They’ve been working 14-hour days, 7 days a week to get the show up and running,” said Barry Thurston, president of Columbia TriStar Television Distribution, which is distributing “Vibe.” The latenight talk-variety strip is an outgrowth of the fast-growing monthly magazine Jones and Salzman launched with Time Warner in 1993. Jones and Salzman bought out Time Warner’s stake in Vibe last year, and this year they added the rock ‘n’ roll monthly Spin to their magazine holdings.