* @param originalPlaylist The playlist to be copied.
* @return True if the playlist does not already exists, False otherwise.
*/
public boolean duplicatePlaylist(String playlistName, String originalPlaylist) {
if (!_items.containsKey(playlistName)) {
Playlist newPlaylist = new Playlist(playlistName);
newPlaylist.setDate(new Date());
newPlaylist.setPosition(_items.size());
_items.put(playlistName, newPlaylist);
Playlist originalPL = _items.get(originalPlaylist);
Iterator<AudioItem> iter = originalPL.getAudioList().iterator();
AudioItem item;
while (iter.hasNext()) {
item = new AudioItem(iter.next());
newPlaylist.addAudioItem(item);
}