This isn't what you're looking. If you want the Java iTunes look-alike, go grab it from here jTunes.
I many gigs of MP3s on my main computer. I have M3U playlists that play them. I also have an Archos JukeBox MP3 player. I needed a way to take an M3U playlist, and move the playlist onto the Archos and flatting all the MP3s into a single directory. That's all!
jTunes is released under the GNU General Public License, version 2.