I have a wav file I downloaded but haven't tested yet. I believe it's the 32 programme rather than the 120. I don't think there are splits or doubles either. It's called obxa 8bit 22KHz.wav and is 358KB. Is that what you already have
Do you have a cassete machine that works, I still have the original tapes around, but might have to dig, I've moved twice since I last saw it.
I also have the 32 factory preset chart but not scanned.

Are you in the UK