Slash is the correct name of the track for Stage 4', and Opus 13 is the correct name of the track for Stage 5' and Peke. Even the original Rondo game's sound test (emulate it if you want to check it out) has the names right.
The Dungeon is wrong, the Rondo soundtrack on there isn't even the same tracks. I stated this when the re-release of the Rondo soundtrack came out that I bought, the track names are the right order as the dungeon, but the tracks themselves are reversed for Opus 13 and Slash. Also, the tracks are different on the Dungeon. Like Bloody Tears fading out instead of finishing off with a beat, there shouldn't be Dracula's laughing before Dance of Illusions, Vampire Killer has a definite end instead of fading out, etc. There's plenty of differences between the Rondo soundtrack on the Dungeon and the real one.
I notified Kurt about this way back in the day. Don't know if it was ever intended to be fixed. As for Dracula Battle, I don't physically have the soundtrack, so I can't say.
BTW, a few of the folks around here and I have made high quality MP3s and OGGs of every soundtrack we could physically get our hands on. They were on my ftp server but it died.
As for Annette, well it's up for debate.