Mostow/Lieberman Prods. has named Abby Wolf prexy of the Universal-based company, effective June 1. Wolf joins Mostow/Lieberman from Sandollar Prods., where she served as prexy. While there, she oversaw such productions as “As Bees in Honey Drown,” and the HBO original telepic “Holding Out.”

Bruce Apar has been upped to editor-in-chief and associate publisher of Video Business magazine, the weekly publication of the video retail industry. Marcy Magiera, currently executive editor for Video Business, replaces Apar as editor. The appointments were made by the magazine’s publisher, Rose Einstein. Apar is a 25-year vet of home entertainment journalism, and has been editor of Video Business since 1989. He is based in New York. Magiera, who is based in Los Angeles, has been with the magazine since 1994. Video Business is part of the Variety Group of publications at Cahners Publishing.

Rosalie Joseph has been named VP of East Coast casting for ABC Entertainment. In her new position, Joseph will oversee the casting of all ABC pilots in New York as well as the development of new talent for the network. Joseph joins ABC from MTM Prods. where she was veepee of talent and casting since 1996.

Stacy Davis has been named director of publicity for NBC Studios, the Peacock web’s production arm. Davis comes to NBC after serving stints with PR firms the Lippin Group and Baker Winokur Ryder.

Robert M. Hebenstreit has been named veepee of research for Paxson Communication’s PaxNet web, due to bow Aug. 31. Hebenstreit comes to Paxson after spending 16 years with station rep firm Petry Television, most recently as VP and director of research.

MovieFone has upped Richard O’Connell to senior VP of exhibitor sales, also boosting Matt Blumberg to VP of marketing and product management. O’Connell will manage MovieFone’s association with exhibitors, overseeing the expansion of both teleticketing and reserved seating programs. Blumberg will work to combine the marketing, advertising, sales and product management efforts of MovieFone and MovieLink into one department.

Thomas Ehlmann has been upped to veepee and general manager of Tribune Broadcasting’s KHTV Houston. Ehlmann had spent the past two years as KHTV’s director of sales.

Serge Del Grosso has joined Fox Broadcasting Co. as VP of research and marketing, announced Giles Lundberg, senior VP of that department. Del Grosso will be responsible for working with national sales management in positioning marketing issues to the advertiser and agency community. Most recently, Del Grosso served as VP and director of market resources for CBS.

Dennis Boser has been buoyed to VP of affiliate audit at Showtime Networks Inc. Boser’s new responsibilities include identifying and developing the business strategy for Showtime’s affiliate audit teams. He most recently served as director of affiliate audit for the company.

Sara Edwards has been upped to VP of DBS at Showtime. In her new position, Edwards will oversee distribution, packaging, and promotion of Showtime’s brands. Most recently, she served as director of DBS for the company. Showtime also upped Ken Kay to VP of direct-to-home. Kay will oversee Showtime’s daily TVRO operations in addition to the direct-to-home financial operations group. Before his appointment, Kay worked as director of business planning for the company.

Janet Kerrigan Daily has been promoted to manager of publicity, primetime series at CBS Entertainment. Daily, who will continue to report to Terri Corigliano, VP of publicity of primetime series, currently serves as publicist on “Chicago Hope” and “Everybody Loves Raymond,” among other series. Daily joined CBS as a senior publicist in March 1995.