method of storing new content items , user device for rendering content items , the system for transferring content items , and data carrier

摘要

A user device ( 1 ), such as an MP3 player, is capable of down-loading and storing content items, such as songs or video clips. To ensure that the memory of the user device is always filled to capacity, even when the downloading is interrupted, the user device marks any old content items that may be deleted and only deletes these deletable content items when necessary for releasing memory space.