public String toString()
	{
		StringBuffer buffer = new StringBuffer(200);
		buffer.append("Layer ");
		buffer.append(layer_string());
		buffer.append(" frame ");
		buffer.append(mode_string());
		buffer.append(' ');
		buffer.append(version_string());
		if (!checksums())
			buffer.append(" no");
		buffer.append(" checksums");
		buffer.append(' ');
		buffer.append(sample_frequency_string());
		buffer.append(',');
		buffer.append(' ');
		buffer.append(bitrate_string());

		String s =  buffer.toString();
		return s;
	}