Playlist export options

Would be nice to have a playlist export option to skip (not copy) files that already exist on the destination.

Why: I have a master playlist for exporting files for mobile. I export the playlist to a folder then use robocopy to sync that folder to the mobile device sd card. I run the export every now and then to refresh the mobile sd card and copy the updated .m3u playlist.

There are about 2200 files and it takes a long time to export them all when I’ve only added a handful.

(It would also be nice if it would remove files from the destination that have been removed from the playlist. Don’t want to ask for the moon, though.)