Grim, found this when I DL'd it now:
This is a patch file if you have the 1.10 version of Ariane in Paradise and want to upgrade to 1.11.
On PC or Linux, extract the file to the directory where the arianeinparadise.exe is located, say yes to replace files.
On Mac you control-click (right-click) the Ariane in Paradise app, Show Package Contents, go to Contents/Resources/autorun/ and drag the patch game folder, and if a window pops up, choose “Combine”.
I have had reports that "Combine" may not always be an option. If not manually replace the individual files in the patch’s ‘game’ folder and its sub-folders with the files in the original game. Meaning ‘game’ files to ‘game’, ‘gui/overlay’ files to ‘gui/overlay’ and ‘images’ to ‘images’.
Hope it helps