private SoundManager()
    {
        try
        {
            startClip = initSound("/sounds/start.wav");
            warnClip = initSound("/sounds/warn.wav");
            overClip = initSound("/sounds/over.wav");
        }
        catch (UnsupportedAudioFileException e)
        {
            handleError("Wrong audio file!", e);
        }
        catch (IOException e)
        {
            handleError("Cannot read audio file!", e);
        }
        catch (LineUnavailableException e)
        {
            handleError("Problem with audio file!", e);
        }
    }