You could have a friend with a Mac or Windows computer download them then give them to you on a flash drive or something. Also, old versions of iTunes are known to run in Wine.

I don't see the point though; the iOS SDK is Mac only.

Try:

http://deimos3.apple.com/WebObjects/Core.woa/Feed/itunes.sta...

I've been using TunesViewer for the 2010 class lectures, and it worked well.