Want to know how to play a weird video file on your Mac? Don’t worry – there’s probably a simple solution. There are dozens of video file formats, with more being added all the time, and it’s ...

Reader Jon Nunes has old movies and a new operating system that don’t see eye to eye. He writes: I have a lot of old .avi movies from the days when I was using a Windows PC. I’d like to play them on ...