I’d like to record someone reading the dialog, then have it automatically move it to the next line… basically, the idea is that it will work like subtitles. Has anyone done something like this?
If you want accurate synchronized scrolling, I guess it will require a lot of work. 
If all you want is to display a new line for each sentence, you can split your audio in sentences and trigger the files at each new line.
But no, I haven’t done that.