If you buy it from GOG you should be able to get the Windows exe, you can then try and install it with WINE. That should give you the game files to import into OpenRCT2.
An amazing project, My only criticism is the scaling, playing in 1080p makes the UI really small, it does have scaling in the options but 1.5 uses antialiasing and kinda ruins the pixel graphics.
Otherwise the best way to play this. I'm pretty sure you can also import certain elements from RCT1 if you have it.