I haven't tried my mp3 player, but itunes was a nightmare. Since the vista install renamed my documents directory from hp/ to john/ I've had to update my playlists.
My cd burner works great. Just my dang screen resolution that has me ticked off. 1200X800 really really blows. I'm not about to revert to xp after all the time spent upgrading software (something like 8 hours).
I will just punish them with my money, going Mac once I can dish out another couple of thousand dollars.
Here is my issue - HP won't support the video driver for my 3 year old laptop with vista. ATI won't support my video driver since it is an HP (they have a driver for the same card - but it doesn't work for mine). Microsoft probably won't do a thing either. End result - learn how to write my own driver (yea right) or buy a new laptop. I can say for certain it won't be an HP and it won't run Vista.