Apple has posted
iPod Updater 2004-07-15, a consolidated updater that includes the latest software available for first, second, third and fourth-generation iPods, as well as iPods mini. The software can be downloaded from Apple’s Web site now.
The new updater does not provide any new features or functionality for existing iPods, but it does roll the most up-to-date capabilities into a single update. iPods without a Dock Connector gain compatibility with iTunes 4.5 or later and get improved playback performance, while Dock Connector-equipped iPods and iPod minis can also support Apple Lossless Encoder.