I just started learning greek and noticed that the Greek Alphabet Tutor does not have the correct pronunciation for the erasmian scheme. Eg. in the word list below: β (beta) is pronounced with a v sound (as in van) instead of b (as in boy) and δ (delta) as "th" (as it that) instead of d (as in dog).
Basically, no matter which pronunciation scheme I choose it all sounds the same.