I enjoyed my experience with iTunes for the most part until yesterday (the icon looks decidedly Microsoft to me, though, and gapless playback isn't flawless). I then hit a snag where I was unable to download music from the store, and was unable to play any of the music I had ever purchased. I tried all the Apple fixes and even emailed the support crew; I finally quit and relaunched the program, and it all worked again. I dunno if it was just a program bug, or if they needed to fix a problem on Apple's side, but it was a headache for the better part of an afternoon.