Now the good news is that even though the game was originally for Dos/Windows - it could works also under OS X and Linux
using Dosbox or Boxer for Mac - but it needs some tweaking :
Otherwise that's pretty much the end of the adventure before you begin
as the game requires to access the cd-rom (labelled as CD1 or CD2
depending on the party you're playing)
the fix is to type this dos command or to create a .bat file that includes
mount d /media/cdrom -t cdrom -label CD1
then launch RA.exe and enjoy