App – Some question

first of all: GREAT JOB!!!!
then couple of questions:
1) can I disable the LiveTV / PVR functionality completely? I do not have any PVR or tuner so is not useful
2) Often the app hangs when I try to close it, is it possible to understand what’s going on?
3) If by mistake I have two copies of the same movie (i.e. movie.mp4 and movie.mkv) and I delete the movie.mkv even if I clean the library the movie is always there… how can I have the library correctly refreshed?