code: public String getGenre(int type)
  	{
  		if (allow(type&ID3V1))
  		{
  			return id3v1.getGenreString();
  		}
  		if (allow(type&ID3V2))
  		{
  			return id3v2.getFrameDataString(ID3v2Frames.CONTENT_TYPE);
  		}
  		return null;
  	}
docs: Returns the genre of this mp3 if set and the empty string if not.
  
  @return the genre of this mp3
  @exception ID3v2FormatException if the data of this field is incorrect