This 0.60 version for 68k was a recompilation from SixK of my MorphOS MAME port (he did it mainly for amithlon).
Porting the current MorphOS version to 68k would be quite easy, and it would include the builtin
MUI GUI (similar to the old MAME PowerUp, but a bit more modern.
Latest public version of MAME MorphOS is 0.121, but i also have ported 0.138 anyway.