Bourne.el.ultimatum.2007.1080p-dual-lat.mkv [better]

Assuming you have legally obtained this MKV, here is how to maximize the "Dual-Lat" experience.

If the file does not have embedded subtitles (rare for "Dual" MKVs), download .srt files (English or Spanish) from reputable subtitle databases and name them identically to the MKV file. Bourne.El.Ultimatum.2007.1080P-Dual-Lat.mkv