...it actually opened! All the audio and track names were intact, and I was pulling from a no-name, eraseable CD-RW I bought for the cheapest price possible at a German consumer electronics store. So that was also encouraging.
Anyway, I realize this is not earth-shaking news but it might give some comfort to those who have a bunch of ancient OMF projects sitting around, and are afraid of not being able to open them.
That is all.