I've made a quick search on the MusicBee forum and found that there used to be a plug-in that supported organising video files inside MusicBee, and that it wasn't supported anymore.
What I'm wondering is why there's still an "Include Videos" option in the preferences panel, along with options for the external video player. Am I missing out on something? 'Cause, if it's possible, I'd be interested in being able to organise my music and videos all in the same place (MusicBee, 'cause it's like the third coolest app ever, after FL Studio and DuoLingo, LOL). Additionally, having lyrics videos for some of my music would be sick too.