Unless you are refering to sorting open games by map size (which I doubt)... just open the map list, up top there's a "Map Sorting Style" with a blue hyperlink looking thing, where you can sort by name, size or grade.
That's unitsyncs fault not tasclients, I get the same thing when I ask unitsync to directly output minimaps as jpegs, so I'll have to manually resize the minimaps afterwards after reading in the maps dimensions.
