Patent ID: 7680814

Claim:
A computer-implemented method of creating sub-groups of media files within a group, said computer-implemented method comprising: selecting, via a processor of a computer, one or more media files available to the computer, said media files being selected according to a grouping criterion specified by a user of the computer to define a first playlist; defining a second playlist from the selected media files according to another grouping criterion, said first play list and said second play list both referencing one or more of the selected media files; creating a folder associated with the first playlist on a removable computer readable medium temporarily associated with the computer; storing, in the created folder on the removable computer readable medium temporarily associated with the computer, a plurality of values each identifying a playlist of a plurality of playlists, said plurality of values comprising a first value identifying the first playlist and a second value identifying the second playlist; and storing a plurality of references in the created folder on the removable computer readable medium temporarily associated with the computer, each reference of the plurality of references corresponding to a playlist of the plurality of playlists, said plurality of references comprising a first reference to the first playlist and a second reference to the second playlist.