Kendrian has listed a possibility for MAC users to be able to play DiDnapper natively without the installation of Windows or dual boot, etc on MAC OS X, and it's called RPGHub.
Thus far I haven't been able to get it to work, as DIDnapper closes out immediately once you follow the directions. In fact, it's the same result when using Wine/WineBottler for MAC OS X, which is something that I had tinkered with originally. Since I own a PC Laptop, I use that to play but it would be nice to be able to use the OS that I always have.
If any users out there have ways to get existing methods operational, or something new, it would be appreciated. I will continue on my end but I have not had success thus far.