The font size is controlled in the skin. If you're comfortable editing your skin files, I can point you to the right place. If not, you can switch skins, or decrease your display resolution. What skin do you use?
<control>
<visible>Control.IsVisible(50)</visible>
<description>Movie List</description>
<type>listcontrol</type>
<id>50</id>
<onleft>2</onleft>
<onright>2</onright>
<posX>786</posX>
<posY>252</posY>
<height>490</height>
<textXOff>-30</textXOff>
<IconXOff>1980</IconXOff>
<spinPosX>1549</spinPosX>
<spinPosY>690</spinPosY>
<spinAlign>Right</spinAlign>
<spinColor>ff006698</spinColor>
<spinCanFocus>no</spinCanFocus>
[B][COLOR="Red"]<font>font60</font>[/COLOR][/B]
</control>
<control>
<description>Movie List</description>
<type>listcontrol</type>
<id>50</id>
<posX>10</posX>
<posY>90</posY>
<width>300</width>
<height>390</height>
<onright>5</onright>
<spinPosX>#spin.xposition</spinPosX>
<spinPosY>#spin.yposition</spinPosY>
<spinWidth>#spin.width</spinWidth>
<spinHeight>#spin.height</spinHeight>
<spinAlign>left</spinAlign>
<scrollOffset>1</scrollOffset>
<textureUp>MovingPictures\page_up_nofocus.png</textureUp>
<textureDown>MovingPictures\page_down_nofocus.png</textureDown>
<textureUpFocus>MovingPictures\page_up_focus.png</textureUpFocus>
<textureDownFocus>MovingPictures\page_down_focus.png</textureDownFocus>
<textureFocus>MovingPictures\menu_focus.png</textureFocus>
<textureNoFocus>dialog_button_nofocus.png</textureNoFocus>
<textXOff>-20</textXOff>
<textXOff2>450</textXOff2>
<IconXOff>1400</IconXOff>
<textcolor>ffffff</textcolor>
<font>font60/font>
</control>