I just modified the tool to use the "description" field as the file name.
Same URL:
http://helicoid.de/scumm/unxwb-mi.zip
This way the music score is still not named very descriptive ("track18b" is the theme music for example, oh and you can guess what "silence" is) but the speech and sound effect names are MUCH better this way.
So the list should probably be made for the "trackNN" names.
EDIT: Actually the track order is basically the same as the original (Enhanced CD) version, so there should be a list out there already ;-)