Thanks for the info. While I'm not happy to be buying a 2nd copy (esp. not since it was my fault for jumping the gun), I do have a friend who would probably love this game, so my extra SN will be getting a good home.

I didn't see this thread until recently, but I had purchased the PC version to use the serial #s for the Mac Beta (I only have a Mac as well). Should I be worried that the serial # will stop working when the final version for the Mac is released?