Have you ever tried to watch a video file - only to find out your usual media player program can't play it? QuickTime and Windows Media Player come preloaded on most computers, but they don't play every file type.
I know that it can be irritating, but hang on. You don't have to blow your top, I have the perfect solution.
Try VLC player instead. VLC is a free, open-source media player that plays almost every audio and video file format in existence, plus CDs, DVDs and Blu-ray.
It even handles webcams and streaming content, and it can convert media from one format to another. Not only is it powerful, it's lightweight - there isn't an overabundance of flashy features and useless add-ons.
VLC runs fast, and there are no ads, which makes it perfect for any audio or video file you need it to run.