Steve,
If you installed BeerSmith normally, then the "file association" for any .bsm file should allow you to just click on the recipe (ABOVE) and open automatically with BeerSmith. However, if you have copied the file, and still cannot doubleclick on the file name and get a successful open, I think you may have a bad download. I had no problem with it. Try to download it again, or better yet just click on the .bsm file in the post and it SHOULD open.
Hope this helps!