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This paper investigates QoE (quality of experience) of MVV (multi-view video) and audio transmission over IP networks. Unlike previous works that mainly discuss MVV transmission from aspects of video codecs, we study MVV and audio transmission under various IP traffic and delay conditions by experiment. We compare two schemes: a scheme that the user watches a single viewpoint, and the one that he/she can choose one viewpoint from many viewpoints. At the same time, we perform a user study which helps us to understand the user behavior in the MVV system under those conditions. As a result, we show that high QoE can be achieved when the user can change the viewpoint with low load traffic and delay.