Reproducer and method for controlling reproduction

A reproducing apparatus comprising:

• a contents data recording medium in which a plurality of contents data are recorded;
• environmental variable acquisition means for acquiring environmental variables;
• reproduction history storage means for preserving identification information of the reproduced contents data combined with the environmental variables at the time of reproduction;
• and
• reproduction control means for selecting and reproducing contents data from said contents data recording medium based on similarity between environmental variables at present and environmental variables stored in said reproduction history storage means.