public void updateFile(){
		MP3 mp3=null;
		try {
			mp3 = new MP3(songFileName);
			if (notEmpty(title))
				mp3.setTitle(title);
			if (notEmpty(artist))
				mp3.setBand(artist);
			if (notEmpty(album))
				mp3.setAlbum(album);
			if (notEmpty(year))
				mp3.setYear(Integer.parseInt(year));
			if (notEmpty(comment))
				mp3.setComments(comment);
			mp3.save();
		}catch (Exception e){
			e.printStackTrace();
		}
	}