With the development of network and multimedia technology, traditional radio station director device is still using telephone coupler or the method of combination with CTI boards and telephone Coupler, which cannot meet the needs of radio businesses. For this reason, digital multi-channel director system emerges. New generation of digital director device builded by IP communication technology based on packet-switching, can effectively solve the problems faced by traditional director device, meet the needs of radio stations and listeners. Digital multi-channel director server is the core of director systems device. This paper designs and implements a digital director server system based on Keygoe device. Digital director server system architecture is desiged with modular method. This paper presents the design and implement of modules in digital director server system, such as resource management module, policy enforcement module, message communication module, and user interface module.