Wonko: That's very interesting, glad to see it there. Possibly it's not simply upstream ScummVM, but somebody patched it to work with SDL 2.0, since according to official ScummVM developers it's not going to support SDL 2.0 until later time. It doesn't build with SDL 2.0 from the stock source.

Android_808: Whatever their reasons are, ScummVM main tree needs to support some legacy stuff. But this new port possibly disabled some features, since most game indeed have no need for CD audio.