Here’s Jae Won’s guide to making Such a Long Journey work in Gom player.
We can see the movie “Such a Long Journey” after changing Gom option.
1. Click Gom player.
2. Click right button of mouse, and choose option(환경설정)
3. Choose Filter option(필터옵션)
4. Choose “‘Wm ASF Reader’를 사용하여 재생
5. Close the option(닫기)
6. Run the movie.
I attached a picture which is contained how to change the option.
I hope to everybody can watch the movie as soon as possible.
Here is the screenshot he mentioned (click to see it bigger):
I hope this helps!
Otherwise, try VLC.