@Thomas > These are not bugs. Unfortunately there is currently no ability to create mixed-media playlists within rekordbox, and this comes down to the fact video files can't be played on any of our CDJs or XDJs, therefore they can't be exported or mixed with other audio files since a DJ may forget they're videos and then wonder why they didn't export.
I'm not sure what you mean about your 3rd question about "add video files after search," can you clarify?