Quicktime Annoyance

I could maybe see this if I hadn't shelled out the money for Quicktime Pro twice (once for 6.x and once for 7.x) but I don't think I should be subjected to ads if Quicktime can't figure out how to open my file and while I'm at it I wish iTunes was smart enough to mute itself when Quicktime (at the very least) or VLC was running.