maybe Authoring support is missing?

Quote:

iTunes works with all Macintosh computers that have built-in USB ports. Mac OS 9.0.4 is required; Mac OS 9.2.1 or later is recommended. To burn audio CDs, you must have Mac OS 9.1 or later, the Authoring Support software, and a supported CD-RW drive. The Authoring Support software is not included with the iTunes installation. Use Software Update to download the latest version. Choose Control Panels from the Apple menu, then choose Software Update from the submenu. Click the Update Now button. You will be notified if there is a newer version of Authoring Support for you to download.

http://docs.info.apple.com/article.html?artnum=120073