Path to Subtitle File

Would it be possible to add in a feature that allows users to define the path to a Subtitle file (.srt).

I have all my movies on a Synology server, and have a folder where I keep all the subtitle tracks. It would be very useful if I could edit a movies info, and define the subtitle track that should be used with the movie.

2021 clean-up: implemented (SubtitlesUpload...)