You may have wondered whether you can just drop a bunch of MKV files in Subler, the free but still excellent MKV remuxer (last, dedicated article HERE), to quickly convert them. As this very useful feature, being only recently (as of version 0.16 a month ago) added to the app, is not widely known, I've decided to publish a complete tutorial on it.
First, there're two ways of queuing the source MKV files in Subler. The first is the well-known, traditional way: using Open.
The traditional way: File / Open