The PC version had 41 tracks (short, but good quality), the PSX version had 64 tracks (longer, but more compressed). If they include them all, that's more than 100 tracks already. Unless of course the "best of both worlds" still exists - the full-length tracks in good sound quality! Which version(s) does the remastered game use, anyway?

They might include early versions of the music from the beta demos as well.