It would be great if plex had an option to allow QuickMode that would re-transcode the video at 1.3 x normal speed—with pitch-corrected audio like the new tivo does. Would be great for TV shows.
Here is the discription that tivo has on their site:
QuickMode allows you to play recordings faster—at 1.3 x normal speed—with pitch-corrected audio, so you don’t have to put up with high-pitched squeaky audio while you watch your favorite programs in less time.