I have got this file in my Window$ XP machine:

CubaseScore68k2.0r10.sea (1479kb), which was obtained upon expanding the original one, CubaseScore68k20r10.sea.hqx.

The file is accessible here

http://personales.ya.com/juanjavier_xxx/CubaseScore68k2.0r10.sea

Now I do not know how to tranfer it to the mac in order to get it extracted.

Any idea about it? Regards.