In a storing apparatus having a built-in recording medium, which stores program files, if there is no method of securing a free capacity of the recording medium, except for deletion of files, a user may have a feeling of resistance against the deletion of stored program files. Further, in securing the free capacity through recompression, there is a limitation to achieving a securable capacity. These problems can be solved by increasing the capacity of the disk to some extent, but this method is insufficient. Thus, a storing apparatus is provided in which, when the capacity of the recording medium is small, selected program stream stored in a hard disk is outputted via a network control unit to an external storage medium, and, after that program stream is outputted, the corresponding program stream is deleted from the hard disk.