This function allows to automatically recognize files to be open on SP's start or on Drag&Drop operation. The file type is recognized by filename extensions.
You can assign extensions to these file types:
When you drop a file to SP with extension that isn't in any of these lists, the Drag&Drop dialog appears allowing to select the type of the file manually.
The extension lists are also used for other functions:
Do not assign same extensions to multiple file types.
When more files are dropped to SP, all media files are opened first and matching subtitles are searched in the list for the media files (same filename excluding extension). As a result, when 2 parts of a 2CD movie together with 2 subtitles are dropped to SP, the media files are inserted to the PlayList together with appropriate subtitles