The recommended playlist creating section generates several recommended candidate playlists having different reproduction orders as recommended candidate playlists each indicating a recommended reproduction order when one or more contents are sequentially reproduced. The assembly has a supporting rail attached to a supporting surface and a pull-out rail attached to the drawer. In some methods, algal biomass is used to reduce blood glucose andor body fat in a subject, or to increase the relative abundance of beneficial gut microflora in a subject. The advantage of positioning the high-voltage cables in the coolant channels is that the coolant comes into direct contact with said high-voltage cables, thus ensuring efficient and uniform cooling.