It's actually a lot simpler than all of this, as some others have suggested. The Greek pronunciation of the name of the Greek letter F is always "Fee." In Greek, the name of the letter is spelled Fi. For it to be pronounced "Fie" it would be spelled Fai. F is never pronounced "Fie" in Greek -- that is a North American, anglicized pronunciation.

In the same fashion, all of the other letters with an "i" in them are pronounced "ee" in Greek: Iota = "EE-ota" (or "Yota"); Xi = "KSee"; Pi = "Pee"; Chi = "Chee" (with a German or Scottish shounding "ch" like "ach" or "loch"); and Psi = "PSee."

The bottom line is that no GLO I've ever heard of uses the Greek pronunciation for the Greek letters that form our names -- even the Alpha Phi's use "al-fa" instead of "ahl-fah." We all used anglicized pronunciations.

The site that lauradav put in her post -- http://www.cogsci.indiana.edu/farg/h...an/grkphon.htm -- is very useful because you can click on the pronuncations and hear them. Click on all of the letters and you'll find some surprises, such as "Beta" is pronounced "Veta" in Greek and "Mu" and "Nu" are pronounced "Mee" and "Nee."