private Gm createGmObj() {
		String cPath=credPath();
		if(StringUtils.isEmpty(cPath))
			return null;
		File f=new File(cPath);
		if(!f.exists())
			return null;
		BufferedReader in;
		try {
			in = new BufferedReader(new FileReader(f));
			String str;
			while ((str = in.readLine()) != null) {
				str=str.trim();
				if(StringUtils.isEmpty(str)||str.startsWith("#"))
					continue;
				String[] s=str.split("\\s*=\\s*",2);
				if(s.length<2)
					continue;
				if(!s[0].equalsIgnoreCase("gmusic"))
					continue;
				String[] s2=s[1].split(",",2);
				if(s2.length<2)
					continue;
				return new Gm(s2[0],s2[1]);
			}
		}
    	catch (Exception e) {
    	} 
		return null;
	}