When the CD contains only compressed files, the files are located under the root folder.

The next and previous folder functions do not display on a CD that was recorded without folders or playlists. The radio displays F1 DISC for the root directory.

When the CD contains only playlists and compressed audio files, but no folders, all files are located under the root folder. The folder down and the folder up buttons search playlists (Px) first and then go to the root folder. The radio displays F1 DISC for the root directory.