Here are a collection of links and resources about iTunes 4.9. A PDF that documents the new XML/RSS tags Apple is using. A tool called “Chapter tools”. Chapter Tool allows you to create chapters within a MPEG4 AAC file created with iTunes. Minimally, chapters must include a start time and one other attribute. Optionally, chapters may include pictures or web links that are displayed within the iTunes song artwork pane. An overview of the RSS and how to do one-click.