Add support for allowing a single Custom Component to exist out of multiple files

[Bittah]

Currently Custom Components such as music and videos exist out of a single large mix-file that contains all of the music or videos.
It would be a lot more convenient if especially movies could be downloaded to a folder as individual files so that players won't for example need to re-download a 700 MB mix-file when a new video has been added or one of the videos was edited.

Vinifera already added support to allow TS to play videos from the Movies folder, so there's also no longer any need to work around TS demanding to read them from mix-files.