I regularly test IMT on Wine under Ubuntu to see whether the bugs with dialog boxes have been fixed. Testing with the latest version at home, I found that the IMT worked fine using the latest Wine version (0.9.55), set to Windows ME emulation. This morning I tested this thoroughly and confirmed it does indeed work; then we tried running it on OSX under DarWine (also using Wine 0.9.55). The latter failed, unfortunately, but not with all dialog boxes (as used to be the case). The only problem was the Open Picture dialog box, which renders a preview; this seemed to send DarWine into a tailspin.

All this is very hopeful, so I've updated the Website to include detailed instructions for installing Wine/DarWine and running the application under it.