[Zubersoft]

At the moment, I do not support a filter for that. You can modify the song title formatting to list MIDI commands in the title or caption, and then you could scroll through and identify which songs don't have a MIDI command. There are other approaches you could use as well, such as specifically filtering for a MIDI command in the title and/or caption after making that change, then select all those songs, add a new piece of metadata, then filter on that metadata with the dropdown set to "Exclude", and it would only then display songs without a MIDI command. 

Alternatively, you can run queries against the database itself (which is more complex than it sounds) to identify which songs have MIDI commands and which do not.

Mike