Have you been trying with the commandline or the very useful GUI? (AC3Machine)In any case, this should work for you once you amend the path of BeSweet & names of the source/destination ac3 files:"C:\BeSweet.exe" -core( -input "C:\Source.ac3" -output "C:\Destination.ac3" ) -azid( -c normal ) -ac3enc( -b 384 -6ch ) Report