public void initSong(PlayListItem item, ID3Tag id3Tag){
		//如果该歌曲没有被保存到本地，则将其下载
		if (item.getPath().startsWith("http")) {
			remoteService.download(item);
		}
		ImageIcon bgImg = null;
		if (item.getCover() == null) {
			bgImg = new ImageIcon("img/bg1.jpg");
			bgLabel.setIcon(new ScaleIcon(bgImg));
			return;
		}
		File file = new File(item.getCover());
		if (file.exists()) {
			bgImg = new ImageIcon(item.getCover());
		}else{
			bgImg = new ImageIcon("img/bg1.jpg");
		}
		bgLabel.setIcon(new ScaleIcon(bgImg));
	}