I use M3U playlists in Kodi so I can use my iPad Kodi Music Remote to play any track from any concert/music video. This is a workaround for playing music videos as the Kodi Music Remote is targeted for Kodi music (audio only) library and doesn’t ‘see’ the music video library.
I create an M3U playlist for each concert that includes every song file in the concert. MMH has a tool to auto scan all music video sub-folders recursively and create all the M3U files automatically.
If you copy these files to your Kodi UserData folder, Playlists, Mixed folder, the Kodi Music Remote sees these playlists (Mixed is intended for playlists that contain both audio and video). In the Music Remote theres a a list of PlayLists so I can see all my concerts. Clicking on a PlayList opens it and I see all the concert song titles and can then play or queue any I select. No need to use my normal remote control and navigate on the Kodi UI (TV).
I also use M3U playlists to create Audio Only playlists. I have these for things like: Best Quad Music, Demo Surround Music, Best Acoustic Guitar Music etc. If I copy those playlists to Kodi’s UserData, PlayLists, Music folder the iPad Music Remote shows those playlists and I can play all tracks or pick and queue any track from any playlist, again without having to navigate the main Kodi UI (TV).
The MMH docs has more info on a couple of tools to help create M3U PlayLists.