code: public void setUserDefinedText(String desc, String text)
  	{
  		if (allow(ID3V2))
  		{
  			id3v2.setUserDefinedTextFrame(desc, text);
  		}
  	}
docs: Add a field of miscellaneous text (id3v2 only).  This includes a
  description of the text and the text itself.
  
  @param desc a description of the text
  @param text the text itself