When an information processing device has been connected to this audio server via a network, an evaluation request means of this audio server requests this connected information processing device to notify evaluations for items of audio contents which that information processing device has downloaded in the past. And, when an evaluation for some item of audio contents has been received from an information processing device which has been requested to provide notification of evaluations for items of audio contents by the evaluation request notification means, a summarization means of this audio server summarizes a plurality of evaluations for that item of audio contents, using the evaluation obtained this time. And a summarized results notification means of this audio server notifies the result of summarization by said summarization means to the information processing device which provided this evaluation of that item of audio contents this time.