No, AD-eh-leen. Not so fond of AD-eh-line which is probably why I'll only use it as a middle name.
Madelyn wasn't even used as a name before
Madeline became common, as far as I know. It is simply a spelling variant of
Madeline which is why I think most people pronounce
Madeline MAD-eh-linn. I've never heard MAD-eh-line in real life and I've met many. There's also an actress named this who pronounces it MAD-eh-linn. She was born in the mid 80s.
Haha I would never use
Madeline or
Adeline as first names even though I love them. No
Emmeline either. Just too many pronunciation troubles. I heard even
Caroline is commonly pronounced
LINN in some places. I only heard
Caroline and
Emmeline as
LINE and
Madeline as
LINN :P