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, the developer of RealPlayer and other Internet media delivery technology, named Larry Jacobson president and chief operating officer.

Jacobson most recently served as president and operating chief of



. Jacobson was president of the

Fox Television Network

, a division of

News Corp.

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from 1997 to 1999.

Thomas Frank, the company's previous chief operating officer, said in November that he was resigning. Jacobson's appointment is effective Feb. 12.

In recent


trading, RealNetworks, which is based in Seattle, gained 13 cents, or 1.5%, to $8.75.