private void BrowseMixDir(object sender, EventArgs e)
{
folderBrowserDialog1.Description = "The directory that contains the mix files.";
folderBrowserDialog1.RootFolder = Environment.SpecialFolder.MyComputer;
folderBrowserDialog1.SelectedPath = FindMixDir(rbEngineAuto.Checked || rbEngineRA2.Checked || rbEngineYR.Checked);
folderBrowserDialog1.ShowNewFolderButton = false;
if (folderBrowserDialog1.ShowDialog() == DialogResult.OK)
tbMixDir.Text = folderBrowserDialog1.SelectedPath;
}