The pronaunciation of Eärendil: all the vowels are pronaunced separately ->" E" like in the word "there" (the first e), "ä" like in the word "father" (the ä only being short), "r" is always (or at least very often) trilled in Elvish, "e" in the same way as the first one and "i" like in the word "machine". If I recall right the accent (or what ever it is called) is in the very beginning of the word -> EÄrendil.
I don't know if you understood my confusing explanation at all but I tried my best. The pronaunciation in Elvish is the same as in Finnish if that helps you

. There are quite good directions in the appendix and of course here:
http://move.to/ardalambion