RealNetworks said today it hired Harold Zeitz, the chief operating officer of Bellevue-based ShareBuilder, as its senior vice president for media software and services. Zeitz will be responsible for RealNetworks' existing RealPlayer and Superpass products and oversee the introduction of new products.

Before ShareBuilder, Zeitz was president and chief operating officer for WorldStream Communications, and before that he was an executive at AT&T Wireless.