the green/wave tab will show the file stats(format/frequency/arts/titles/artist/whatever (note to myself: check some mp3tag docs)
the blue/martini should manage the playlists
the red/duck should be reserved for the files managment

Im surprise someone feel the need to ask about: seems pretty clear to me
Anyway Ill probably kill the martini and the duck when Ill begin to work on the relative tabs.