if wine is not a solution then you can use either VirtualBox's Seamless Mode or VMware's Unity Mode.
I don't think that it's worse to spend time porting PSD to xNIXes, PSD is classic Delphi VCL application, and there is no option to get VCL working elsewhere than Windows.
Porting using Firemonkey is not an option - the libraries are incompatible, also Firemonkey is not native for all the platforms (some bugs + fuzzy look & feel guaranteed).
It will be much better to spend some time porting PSD to x64 mode (VCL supports Win64), for some cases it would be much useful (like selecting huge workset for further export to Excel/HTML/CSV, etc).