3D-Audio is a high quality 3D spatial audio renderer. Animated scenes can be created, where the listener and up to 99 sound sources can be placed and moved within a virtual room. The reflections due to walls can be incorporated up to a user defined recursion depth. Doppler-shifts are automatically allowed for. Scene setup is simplified by a wizard; some demonstration pro-projects are included, which are developed by a step-by-step tutorial contained in the on-line documentation.