Abstract: A method includes determining a size of a particular window displayed on a display screen and a number of content options for a respective content category displayed in the particular window. The size and the number of content options are determined responsive to an indication of user preferences for the respective content category. The method further includes displaying multiple windows, including the particular window, with each of the multiple windows corresponding to a respective one of different content categories. The particular window is displayed with the determined size and determined number of content options. The method also includes accessing an updated indication. The updated indication reflects observed user behavior. The method additionally includes modifying a size of at least one of the multiple windows and the number of content choices displayed therein responsive to the updated indication.

Abstract: A user interface is used for selecting a time duration for a media collection shelf. The media shelf can be populated with graphical elements corresponding to selected media assets, where the cumulative time duration of selected media assets should not exceed the time duration of the media collection shelf. When placed within the media collection shelf, a graphical element corresponding to a media asset is scaled in proportion to the time duration of the media asset as compared to the time duration of the media collection shelf. Optionally, selected media assets within the media collection shelf are played back in a particular order specified by a user.