A method of processing a set of content items, the method comprising the steps of: (150) selecting a particular one (sX, 210) of the set of content items, (160) selecting a first content item (sY, 220) on the basis of a first distance value (dXY, 211) representative of the distance between the particular content item and the first content item, and (180) selecting a second content item (sZ, 230) on the basis of a second distance value (dYZ, 221) representative of the distance between the first content item and the second content item. The particular, first and second content items may be sequentially included in a sequence of content items, e.g. for creating a playlist of content items. The invention also relates to a data-processing device for processing a set of content items, as well as to a distance data structure and a computer program product.