Well, Wilfried, I'll have to disagree with you. Indo-Iranian languages (the Indic and Iranian languages, heh) are actually part of the larger Indo-European family. The historical Aryans were nomadic, Indo-Iranian-speaking tribesmen from Central Asia, who spread their languages throughout Southwest Asia and India. Goofy-ass European scholars appropriated the name for their racist fantasies (Where Aryan=Indo-European=blonde Nordic white guys) in the 1800s, and later, of course, we know what the Nazis did with that. Thanks to the mis-use of the word "Aryan" by these people, it's become, eh, unpopular, and has been replaced with the more politically correct (and sometimes just more correct) terms we use today. (The bastards ruined the swastika too, grr) :)

And, misophist, I'm not sure what you mean by "why is the language NOW called Farsi?" Other than "because that's what it's called," I have no idea. ;) No, seriously, it's probably because Fars province was the historic center of Iran, and the name stuck.

Eh... shoot, I'm tired, and making little sense, I bet. Someone have fun correcting me... Insomnia sucks. Back to bed. :)