I have 2 reasons:
A) The DVD has no search feature that I can perform as the Disboards do
B) this is a lot more convenient as I am reading and typing this on my phone while eating so great blackberry/Peach pancakes at IHOP. If something I read jogs a question I might have, I'm not going to wait until I get home in 3 hours to try to find it on the DVD.
To answer your other question about why nobody answered your question, for me personally, I never even read the question because I don't know anything about the sail away music so I just skipped right over it.