Its the Undertale Official Soundtrack i bought with the collectors edition. So i didn't download these online. I have disc 1 in my music player but it only plays up until doing 45 and the music stops playing after that. I can't even manually fast forwards to the next songs.
If u got that many tracks, am guessing these are mp3-types, and if u didn't burn them, then somebody else did, cuz am not aware they sell factory-made mp3-type opticals. U don't want to hear this, but CD music is obsolete with old issues, use a flash drive, or just play your smartphone via bluetooth.