Increase text size

[Punktured]

i believe that uses the css class "video",
you will find it in your templates default.css file
edit the css, delete cache files, then clear your browsers cache also.

change font and line heights

Code:

div.video  {
    width: 162px;
    height: 138px;
    background: url(images/video.jpg) no-repeat;
    padding: 2px 0 0 2px;
    font-size: 11px;
    line-height: 11px;
}