public void populateSongLists()
    {
        if(!playerLibrary.isEmpty()) {
            titlesList.setListData(playerLibrary.getAllTitles().toArray());
            artistList.setListData(playerLibrary.getAllArtists().toArray());
        }
        else {
            titlesList.setListData(defaultList);
            artistList.setListData(defaultList);
        }
    }