Ok, I've updated dbus-switchboard with the asx hack. Any associated files passed without a file extension will be interpreted as an asx file.

AFAIK, mplayer doesnt handle WMV streams as good as the nokia Media Player. Since your example seems to be a windows media format you might get better results not using dbus switchboard for those asx/asf/wmv mime types. Not sure why that file type would use mime type of mplayer for wmv i guess in most linux distros thats your best bet whereas on maemo nokia probably liscensed paid for wmv codec.

I also added and associated gnumeric files, tweaked mplayer to not log to console (little performance boost to high bandwith vids), and added (but not associated) Timidity for midi's and xarchiver (for whatever types you want).

Note timidity has no ui and cpu is high so you will have to kill task or wait for song to end which is why its not default in xref.

Link to 1.1.3 version in first post.