I do have the problem that in Xubuntu all files of type XML are being opened with one single application. It does not matter if it is an ardour session, or a .kst file for the KDE plot program, everything is just XML and is being opened with always the same application. And when I change the "Open With" setting in the file preferences it changes the default application for ALL XML type files again.
Is it possible to bypass this and e.g. let .kst files start the plotting program Kst, and .ardour files ardour instead of the standard XML viewer ?