Nessuno

Hi, I am unable to convert files from .aac to .mp3 format. I tried to do this with an old version (1.05) and as it did not work, I updated to last version. Switch does not give any error message (with new version ; with old one it did), but the generated file, renamed as .mp3, il empty. (I seached in FAQ and did not find anything about this, and I tried to search posts obout this problem, but I did not success running "search" button...If the problem is well known, I apologize).