Rocks'n'Diamonds

Thanks for your help, it's a pity there's no word about it in the README.

How can I play tutorial (or any ather) tapes recorded by someone else? I don't seem to figure this out, play button doesn't work and eject button says "no tape for this level" although I can se "Tapes" subdirectory under a tutorial directory and copying tapes to the same folder a...