Hi - first off, you've written a really excellent app. The only thing I wish it could do is to play a sound while the user scrolls the text. Ideally the "stop" button would be a "pause" button; I've got short paragraphs of text in russian with a sound clip but can't view the paragraph while the clip plays. I imagine the sound feature was designed for very short (e.g. 1-word) sounds where pause doesn't make sense, but perhaps the interface could be as-is for files less than 500k and 2 buttons (stop/pause) for larger files?
Best,
Greg