Exactly, I think that he even uploaded his songs on his website for download.
EDIT: Here's the website, all the songs for M2TW.
http://jeffvandyck.com/site/Games/Entries/2006/6/23_Medieval_II___Total_War.html
I downloaded them all
Would be a nice addition for the mod, Jeff Van Dyck is a very talented composer, that's for sure.