Great app! I have just one problem: I want to use the app to slow down videos on my mobile device, to help me follow fast speech in a couple of my foreign languages. Unfortunately when the video slows, even just a little, sound grows choppy and echo-like. This makes comprehension more difficult. Might you be able to fix this problem so that speech sounds more natural in slow motion? For example, on my computer I use a Chrome app "video speed controller" that slows speech without any echo or choppiness. Thanks for the help!