iTunes 10.1 live now, introduces AirPlay and iOS 4.2

iTunes 10.1 is now available in a Software Update near you -- the latest version of Apple's all-in-one music library/iOS sync/movie rental/social network/educational material application (why's it still just called iTunes again?) introduces AirPlay compatibility (as promised), lines up the iOS 4.2 release with all kinds of goodies for iPhone and iPad owners, and includes that special sauce that seems to come with all big Apple releases: "stability and performance improvements."

But don't take our word for it -- hit up your Software Update right now and find the new version for yourself. If you spot something in there that we didn't know about, be sure to let us know about it, too.