External play mechanism for roons engine

Since we dont have any way of browsing the raw folder structure and files of ones own music library (special files that might not be in the database, never released unofficial music, wrongly named files and so on) it would be a GREAT BENEFIT to have a little app or even just a contextual menu item, that can allow to send af file for playback to Roons engine. Something really simple that solves the problem of not being able to find and play files that might be on the storage, but has no other metadata than some custom file name. I find it to be a big limitation of the playback capabilities that we cant do this.