No specific info about version 5.6. Please visit the main page of DVD Player on Mac Informer.
Info updated on:
It provides you with a convenient playback experience for your media files.
Ultimate DVD Player will playback DVD video discs and will allow you to change the speed (50% - 150%) and pitch (+/- 2 semitones)....
To customize the Source, Player size, Volume and Playback.
Control your DVD player through any Web browser or from another Mac.