//change song
private void opacity_panel_MouseClick(object sender, MouseEventArgs e)
{
new Thread(() => {
mainscr.BeginInvoke((Action) delegate()
{
mainscr.previousTracks.Push(mainscr.currentTrack);
mainscr.loadNewSong(new TrackInfo()
{
TrackLink = Url
});
});
}).Start();
}