Every new version of iTunes adds new features and key bug fixes. Make sure you're always running the latest and greatest with these tips.
Except right after a major iTunes version has been released, Apple doesn't update iTunes too often, and security risks are minimized since content you load into iTunes typically comes from a 'controlled' environment - be it the iTunes Store itself, your Audible account, etc. So while it isn't as crucial to keep up with iTunes releases as with software patches to your operating system (Windows or Mac OS X), you often get stability enhancements and incremental new functionality by manually updating iTunes or letting it itself automatically check for updates. In some cases, you will have to update in order to purchase new content from the iTunes Store - this has happened with iTunes 9 or iTunes 10. This tutorial explains a couple of ways to ensure that you know when upgrades are available. When you first install iTunes on your computer (Windows PC), Apple will automatically also install a software updater called ' Apple Software Update' (actual file name is ' SoftwareUpdate.exe').