If you don’t already have it, you need iTunes version 7.1.1., which packs a lot of new features into the number one media player. As reported before, iTunes has been updated to accommodate Apple TV and provide full-screen cover browsing; incidentally, it doesn’t slam MusicMatch Jukebox against the wall anymore (see “iTunes Meets its MusicMatch“).
iTunes version 7.1.1 “addresses a stability issue and minor compatibility problems” according to Apple. Must have been that wobble in one of the wheels. Some Windows Vista problems have been fixed, but not all.
See my overview of iTunes version 7.1.1. features for a blow-by-blow description of cover browsing, managing multiple libraries, and using other new features of iTunes 7.1.1.