Presented at 5th International Conference on Auditory Display (ICAD), Glasgow, UK, November 1-4, 1998.The CyberStage is GMD's CAVE-like audio-visual projection system integrating a 4-side visual stereo display and an 8-channel spatial auditory display. A software-based sound server for the generation of auditory cues for interactive virtual environments has been developed for this display system in the context of a research project on integrated simulation of image and sound (ISIS). Hardware and software components of the auditory display and their integration in the CyberStage application development process are described. Four applications from different areas are discussed as examples