XBMC Advancedsettings.xml

<advancedsettings>
    <videolibrary>
        <cleanonupdate>true</cleanonupdate>  <!-- default set to false to prevent xbmc from removing items from the database while updating -->
        <hideemptyseries>true</hideemptyseries>  <!-- hide empty series in the video library -->
        <exportautothumbs>true</exportautothumbs>  <!-- export auto-generated thumbs. Defaults to false -->
    </videolibrary>
    <network>
        <cachemembuffersize>0</cachemembuffersize>
    </network>
    <fullscreen>true</fullscreen>
</advancedsettings>