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Little is known about how this ability is affected by simultaneously present distractor sounds, despite the real-life importance of tracking moving sounds in the presence of distractors. We hypothesized that the presence of a static distractor sound would impair the perception of moving target sounds and reduce the UL and show that this is indeed the case. A distractor on the right was as effective as a distractor at the front in reducing the UL, despite the likely importance of resolving front\u2013back confusions. By manipulating the spectral content of both the target and distractor, we found that the UL was significantly reduced only when the distractor spectrally overlaps with the target in the frequency range relevant for front\u2013back discrimination. 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