private void iPlayerForm_Load(object sender, EventArgs e)
{
const string DEFAULT_FILTER = "TVAllEpisodes";
// set up initial view of treeview
FilterList.ExpandAll();
FilterList.SelectedNode = FilterList.Nodes.Find(DEFAULT_FILTER, true)[0];
var f = new Font(FilterList.Font.FontFamily, 11.25F);
FilterList.Nodes["TV"].NodeFont = f;
FilterList.Nodes["Radio"].NodeFont = f;
UpdateFilter(DEFAULT_FILTER); // default
UpdateCacheLabel();
}