private SourceDataLine getSourceDataLine(String fileName) {
        try {
            URL url = getClass().getResource(fileName);
            inStream = AudioSystem.getAudioInputStream(url);
            AudioFormat format = inStream.getFormat();
            DataLine.Info info = new DataLine.Info(SourceDataLine.class, format);
            SourceDataLine line = (SourceDataLine) AudioSystem.getLine(info);
            line.open(format);
            return line;
        } catch (Exception e) {
            EIError.debugMsg(e.getMessage());
        }
        return null;
    }