Ok it's fixed, ironic find, it's a specific cue file which creates the crash, and from internet archive, I hadn't even noticed they had neocd files. I won't put auto-download from there though because such a format is really a waste of space !
Anyway the indexes are taken into account that's why there was a crash here, that's indeed the index which crashed simply because it tried to seek in the file before loading it... !!! At least the fix was short. I don't plan to release a binary just now for that, this bug has been here for years !
For info to reproduce it, I had an iso + wav files dump and I hadn't even converted the wav to mp3 (lazy... !).
So I just adapted my cue file to look like yours. Then I made a savegame during the demo just before the highscore screen appears. For me it crashed just after the hiscore screen. This way it was very fast to get to the crash, these neocd saves are super efficient ! And finally converting my cue file was not even necessary it would have crashed even with the one I had originally, it's just that nobody left the demo running until now, and for some reason this kind of crash doesn't seem to happen during normal play... !!!
Quite crazy !
But at least it was easy to fix. It's a super old bug here again, from neoraine time, you are super efficient to find bugs currently !