Sorry about that link - must've copy / pasted the wrong URL.
Anyway, if you use a Time Machine backup or Migration Assistant to move your data from the old Mac to the new one, you might not have to mess with any settings at all.
will my itunes library on external HD play on the newer Mac music app?
more specifically, if I get the macbook air M2, will my itunes library on external HD be playable right off or will I have to do some time-consuming uploading of all my audio files into some new configuration? thanks for any thoughts!