I recently purchased a 2011 iMac 21.5 running on OS X Mohave. I had to reset the the computer and now I’m in the middle of set up. I’m set up, but now I need to download quick time media player. I downloaded QuickTime 7.7.9 and a small window appeared. It downloaded and shows in my down load folder but it never applied. Anyone have any advice or help to properly install the QuickTime player on to this model?? Thank you