4.13.0 preview 3 packaging - Could not find a native player for file [...]

  1. The DefaultPlayer and PlatformPlayers fields on the MediaSource assets are not implemented yet.

  2. You do not need to set a DesiredPlayerName on the MediaPlayer. If you leave it empty, the MediaPlayer will try to find a suitable player plug-in automatically. In 99% of use cases you should leave empty. Only set it if you absolutely have a reason to enforce a particular native player.

  3. If the MediaPlayer cannot find a player (as your error message suggests), then that means that the WmfMedia plug-in hasn’t been loaded in your packaged game. Please verify that the WmfMedia plug-in is enabled in your project, and that it is actually in your packaged build.

Please attach the log file of your packaged build.