Shame on me! Yesterday I also uploaded the complete music to the original Castlevania the Adventure and its sequel, Belmont's Revenge, and plumb forgot to post it. Well, better late than never, I guess. The soundtracks come as found in Disc 2 of the Akumajo Dracula Best II Perfect Selection set. Let me know if there's anything wrong with the upload, since I ran into some complications along the way.

UPDATE: File's dead: get a better one below.

http://forums.ffshrine.org/f72/chronos-xs-castlevania-osts-links-83993/#post1600051