Yeah, this works for me. It's pretty cool, actually. It allows you to speed up playback up by a tenth of the current speed up to 8x faster than normal playback, and the same in reverse (slower speed.) Though, there is no sound when you get up to 8x faster. There is at around 5.3x regular speed. Actually, upon testing it again just now, I still get sound at around 5.8x faster, then when you want to go faster, it goes silent. At least, that's the way it is for me in the .mov that I have in there right now.

That's with H.264 video and AAC audio. Not really sure how technical you wanna get with this one. But, I was wondering how it would do in other video/audio formats with regards to still being able to hear sound at a certain speed. Maybe that just has to do with the sound/video card I have. I don't know! lol Fun to explore, though. ;)