[Koric]

I am a pretty avid computer user and music listener, but I have one problem. My current MP3 player the Creative Zen Vision: M is simply too fat. I was looking into purchasing one of the new 16gb Ipod Nanos ( I know, flame me all you want) but I would like to know any info you guys have on Itunes as I assume that will be the biggest problem to deal with. So here are my questions:

~Will I have to convert my non-.mp3 music files to be able to put them into Itunes?

~Does Itunes use any more/less system resources than Winamp (what I currently use)

~In laymans terms what is the DRM policy?

~Can I put non-Protected files onto this Ipod?

~Are there any alternatives to using Itunes that won't void the warranty?

Thanks in advance