What used to be the BEST media player is no longer freeware but is now adware. Make no mistake, there is a difference because it interrupts what used to be a seamless process. Ads appear randomly but enough to be very annoying. For that reason, I rated "Interface" Poor.
SnapFiles does a good job screening, alerting us to trial limitations and the potential install of third-party software. I'm not sure if they note adware type and if not, hope they will.
PotPlayer is a virtual clone of KMPlayer and I would recommend it as opposed to KMP. It's free and what's more, portable!
Review details