An apparatus is disclosed, comprising at least one processor and at least one memory including computer program code, the at least one memory and the computer program code configured with the processor to cause the apparatus to perform the following steps. In a first step, the spatial position of a user in a real world space is detected. In another step, one or more audio signals are provided to the user representing audio from spatially-distributed audio sources in a virtual space. In another step, responsive to detecting movement of the user's spatial position from within a first zone to within a second zone within the real world space, the audio signals for selected ones of the audio sources are modified based on their spatial position in the virtual space.