Ultimate DVD Player 1.4

Ultimate DVD Player will playback "DVD-Video" discs and will allow you to change the speed (25% - 200%) and pitch ( /- 2 semitones).

And yes, it will slow down/speed up both audio and video. Great for checking out music, dance and instructional DVDs!

Handles playback of both commercial and consumer-created DVDs.
Allows you to open VIDEO_TS folders and VOB files.
Excellent video and sound quality with easy navigation.
Audio equalizer.
Selection of available audio streams, subtitles and angles.
Title and chapter selection for the DVD menu.
Loop points and bookmarks management.
Fullscreen play and many more options.