provide correct arg number in url string;
fix another arg number in a string;
manually delete fileDownloadThreads instead of letting them call deleteLater;
prepared slot for Qprocess::finished signal in mplayer; set correct bytearray for left/right arrow in mplayer fwd bwd (untested);
removed parameter names in empty function stubs that won't do anything for now;
comment for shitty qhttpserver workarounds;