wine users - Jul 2007 - wine filetype association with linux application

Hello everybody
I have a windows application, which I am correctly emulating with Wine.
This application automatically starts a link to a xml file in order to
display a video
with the system default application

In the Linux Environment I can open xml files in a correct way.

1. I expected the Wine environment to use Linux environment default file
association, but nothing happens.
Do I have to set anything special?

2. In order to read xml files,  whether I have to set, as default
application,
another program emulated with wine, how can I force files association inside
Wine environment?
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