Many thanks for your reply. Unfortunately, I had already tried your suggestion with no results unfortunately (I DO read the complete threads just to make sure of what I am doing is correct!).
I have previously installed some time ago the same version on a Samsung 7 inch tablet and altough there was no sound originally, setting it by hand solved the problem. As i said, unfortunately this appears not to work with my S3 Mini.
I hope there are folks out there that might have the solution to my problem.
Also, with a working version for my wife's S4 Mini with JB 4.2.2 !!!
Saludos, desde Peru !!!