Request song screen

In the browse screen it is possible to browse through all music that is
available on the player. The method of browsing is the same as the music is
organised on the disc: style->artist->record->song.

Each time the user clicks a folder, it’s contents will be displayed. When the user reaches the songs contained in on the album, a different icon will be displayed. When the user clicks the song, the song is added to the requestlist.