An audio/visual (AV) content providing system is disclosed. The AV content providing system provides AV contents to audiences who exist in a closed space. The AV content providing system has an audio information obtainment section, an AV content database, an attribute index, a selection section. The audience information obtainment section obtains information that represents audiences who exist in the closed space and information that represents the relationships of the audiences. The AV content database contains one or a plurality of AV contents. The attribute index is correlated with an AV content contained in the AV content database and that describes attributes of the AV content. The selection section collates the information that represents the audiences and the information that represents the relationships of the audiences, and the attribute index and selects an AV content that is provided to the audiences from the AV content database according to the collated result.