Agree with what Aussiedroid wrote re: WMP and MPC-HC.
I was able to decline K-Lite with the 13.21 final installer. However, it forced me to install the Windows Desktop Runtime 3.x, which is redundant as I already had a later version installed (8 or 9). After trying to complete the install without installing the Desktop Runtime unsuccessfully a couple of times I gave up, let it install, then uninstalled it after the LB install finished. Everything seems to work fine without it since I had the later version of Desktop Runtime installed.
Please update the installer next time to check if Desktop Runtime is already installed (including later versions) before forcing the 3.x version to install.
On the positive side I like the media pack feature, great idea!