Ok here we go, it's the Akumajo Dracula Best Music Collections Box. At two gigabytes and nineteen and a half hours, this beast covers the entire Castlevania series (or close enough). Except to hear a lot of Konami Kukeiha Club and Michiru Yamane, but there's way more artists as well. I've put an enormous amount of time and work into this release, so hopefully it shows.
Akumajo Dracula Best Music Collections Box
4/06/2010 Update: No more updates:
1) Fixed the m3u, nfo and sfv.
2) Fixed a few tracks that had misspellings on the box.
3) Fixed the "Encoded" field on a few tracks not displaying properly in Foobar.
4) Fixed the Disc 18 tracks "Comment" field.
5) Swapped the titles of tracks 8 and 10 on Disc 4.
6) Fixed the id3v1 album tags for the tracks in the zip file.
Make sure you only have 574 tracks plus the three other files.
You can download the FINAL 1.04 "Toothed Wheel" update here.