New answers tagged file-association
One workaround is to create an useraction (Useractions > Manage user action) that does: xdg-open %aCurrent%; and keymap it (Settings > Configure Shortcuts) to something like Ctrl + Enter. Mapping to just Enter does not seem possible. Works because Ubuntu seems to follow freedesktop.org and use the same apps as xdg-open.
I am using Ubuntu 14.04. I did not need any of the external applications. Here is what I did. Right click on the exe Open with > Other Application DOUBLE CLICK on "Wine Windows Program Loader" Now .exe is associated with wine.
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