Body
Issue/Question
How can I play ASX video files on my Mac computer?
Cause
ASX files are commonly associated with Microsoft's Windows Media Player, and macOS does not have a default behavior to play these files.
Resolution
Download and install a media player that will play ASX files. VLC Media Player is a popular application that can play videos in a variety of formats. It can be used to play ASX files, and can be downloaded here.