This is the download of SoF2 for Mac OS X.
They come in regular *.dmg image files, that properly auto mount on a Mac. From that point you only need a CD key (provided with the upload).
The version for Mac OS X requires OS X 10.1.5 as a minimum. Since the binary is a PowerPC binary (not a Universal one) it will only run on Macs up until 10.6 (Snow Leopoard). Rosetta is reported to work, but also has some known crashing issues. Because of this, a PowerPC-based Mac is recommended.
Since this is the release version (v1.01 of SoF2), a patch to the Gold version is highly recommended.