@Override
    public void close() throws IOException {
        closed = true;
        sourceStream.close();
    }
Implementation of the <code>PhysicalOggStream</code> interface for reading
 and caching an Ogg stream from a URL. This class reads the data as fast as
 possible from the URL, caches it locally either in memory or on disk, and
 supports seeking within the available data.
jme3-jogg/src/main/java/com/jme3/audio/plugins/CachedOggStream.java