code: public static synchronized Media get(File file)
      {
          Check.notNull(file);
  
          final String filename = file.getPath();
          final String localFile = filename.substring(resourcesDir.length() + filename.lastIndexOf(resourcesDir));
  
          return create(localFile);
      }
docs: Get a media from an existing file descriptor. {@link #setResourcesDirectory(String)} must be activated.
  
  @param file The file descriptor (must not be <code>null</code>).
  @return The media instance.
  @throws LionEngineException If invalid parameter.