I don't know if this can be dealt with at the theme level, or at the plugin itself. The FileBrowser window is really small, less than quarter of the screen's real estate. Consequently, the file names are only partially visible in the window and therefore the plugin is pretty much unusable.

I've looked at /usr/lib/enigma2/python/Plugins/Extensions/Filebrowser/plugin.pyc and can see some "size=" directives in there, but not sure if I can change them without breaking anything (and it looks like the character encoding is wrong for my terminal):
Code:
dQdR@ZKdSdT@ZLdUdV@ZMdWdX@ZNdYdZ@ZOd[d\@ZPd]d^@ZQd_d @ZRd!d"@ZSd#d$@ZTd%d&@ZUd'd(@ZVd)d
*@ZWd+d,@ZXd-d.@ZYd/d0@ZZd1d2@Z[dBS@)4ÚQFilebrowserScreena5F@@
        <screen position="110,83" size="530,430" title="">
            <widget name="list_left" position="0,0" size="265,380" scrollbarMode="showOnDemand" />
            <widget name="list_right" position="265,0" size="265,380" scrollbarMode="showOnDemand" 
/>
Is resizing the window easily done, or does it require dev work?