Alternatively, maybe they want to create a dual audio MKV file themselves. For example, combining Hindi and another language audio into one MKV. That would require some technical steps: using software like FFmpeg to multiplex two audio streams into an MKV container. But again, the source material needs to be legally acquired. So the guide could include instructions on how to do that, but only if the user has the right to use the files.

So, the guide should have sections: 1. Legal ways to watch the movie (streaming, purchase). 2. If the user has a legal copy in another format, how to convert it to MKV with dual audio. 3. How to play MKV files with dual audio using a media player. But all instructions need to be under the premise of legal compliance. Also, mention that unauthorized downloads are illegal and advise against them.

Another angle: maybe the user is referring to a DVD or physical copy. If the movie is released on DVD with dual audio, purchasing it might be an option. However, the user specified download, so probably not. Let me confirm the release date. "Amaran -2024" is a 2024 movie, so maybe it's not released yet? If it's not official, any downloads would be pirated. If it is released, maybe legal downloads are available. I need to check if the user is in a region where the movie is available legally. But I don't have that info.