I like I think many others use MusicBee in association with Traktor.
One of the big bugbears with Traktor is its unpredictability when it comes to modifying file tags - as such I don't trust it to operate on my music files at will, I set them all to read only when Traktor is running.
It would be very useful to be able to un-set the readonly flag from within MusicBee by either clicking on a file or several files, or a playlist, instead of having to search for each file individually within Windows Explorer.