I don't mess much with iTunes. I mainly use it for Podcasts. But since the announcement of iTunes Plus a lot of people have been looking forward to downloading music and playing it back on their N95.
It seems that there have been problems. The file once downloaded wouldn't play on the N95. Or other phones tried, either. You can see more here As ever when there are problems, pretty soon someone comes along with the solution. And riding to the rescue here is Joshua King from Tech Transit. Check it out here
For myself, I'm happy to stick to ripping CD's, downloading podcasts, or downloading proper DRM free music. That all works fine.