Could you add an option in the right click menu to play a video using the default external media player??
Also on a side note, if under file types in options, if the default media player is selected for videos and you then import videos mc cannot create thumbnails for the videos. Maybe thumbnail creation should use mc regardless of file type settings.
I don't always use an external media player but in some circumstances I do use it, I'd rather be able to quickly play a file from the context menu rather than globally change my settings..
Thanks