I tried using "ship.mp3" from the special soundtracks
for Toytanic 1. After placing the song in the track's directory, I added its location next to the MP3 tag in the .inf file, and I also disabled the REDBOOK tag. The result was that there was no music at all, which also happened after testing it out with different audio files on different stock tracks. For whatever reason, the game does not seem to recognize the MP3 tag for stock tracks.
I've discussed this matter before, and from what I understand, it is a bug. Please remove it.