Thanks all. I will try and disassemble the player more later today. I cannot see any place online where firmware files are available--this might mean bad news for me. I suppose there is probably a way to re-write the chip, even if it isn't inside the player. I might acquire another Yukai, possibly a broken one, to try to dump the firmware off that chip. I'm not quite sure what is involved; I haven't been able to find the datasheet for it yet.
Where is a good source for datasheets? Should I be trying the manufacturer first? I've just been Googling like mad. Thanks again, Jake
