Hey there! You can find the Mac port of Sundog Song Studio below. It should work exactly the same way as the already released Windows version.
If you have any problems with starting, installing, or running the app PLEASE let me know!
Already tested on several Macs with OS X 10.9 (64 bit CPUs) and OS X 10.7 (64 bit CPU).
Enjoy the testing :)!
Greetings,
Hauke