Theoretically, Alexander Brandon probably has the originals, so perhaps if there was a GOG re-release, he'd put up MP3s of all of it(Which would be playable in Plus), but that's probably as close as we'll get to anything better than the J2Bs(And even then, it's just a theory).

(Also, anyone ever notice that Dang.j2b would have quite possibly originally been called Dang.it?)