Thanks to the posts here I can now watch MKV files from my pc downstairs to my HDTV upstairs in the living room.
I have a few MKV files that need modifying.
When I play the MKV file on my pc, my pc plays the correct audio file but when I play the same MKV file upstairs it chooses the wrong audio file (another language). So I either need to make the english audio file the default or I need to delete the non english audio file from the MKV. I used MKVmerge GUI to remux, I unchecked the audio file I didn’t want but the end result MKV file was unplayable. What did I do wrong?