The `wrapper` is simply a small script that runs and directs the file to be played to the Himedia player and not the one in Kodi.
The only reason for needing this is to play movies encoded with stuff like Dolby Atmos or TrueHD in order to achieve the full audio effect . If none of your collection is coded this way, or, if you do not have a full 7.1 surround sound system you can just use the Kodi player.