Have you read the debate of the other thread (and why a new post about it)? You would known why.
This app is unsupported and removed, that mean he wont reply anymore!!!
Using this for sounds is fine and is no problems at all, using this for insert credits is a big problem and most BOYAC diddent like it.
I even have planned to use a coin stystem in my Frontend that works just like any VS game which use timer, but I guess that might even been a bad idea (even all its would due is just exit any running application it run and hence never do anything in the emulator).