First version contains some bugs, which cause fresh installed SubEasymotion doesn't work. These bugs have been fixed. I'm glad you guys to have a taste.
Ignore Sound and just do what works for you. Your implementation might end up doing something another implementation doesn't, or maybe it'll do it better. The point is that there's plenty of room for multiple plugins that do the same thing. Ignore the fools who believe there can be only one plugin for each thing.