7. The content reproduction device according to claim 6 , wherein the one or more memory devices stores instructions that further cause the one or more processing devices to: generate the use history data by counting, for each of the plurality of databases, the number of searches run by the search step.
7. The content reproduction device according to claim 6 , wherein the one or more memory devices stores instructions that further cause the one or more processing devices to: generate the use history data by counting, for each of the plurality of databases, the number of searches run by the search step. 9. The content reproduction device according to claim 7 , wherein the one or more memory devices stores instructions that further cause the one or more processing devices to: with reference to the historical data generated, generate the use history data by counting, for each of the plurality of databases, the number of searches run by the search step.