encode mono files to dolby 6.1
I need to convert 6 or 7 monofiles into a .ac3 (?) for playing it back via dvd for a sound installation. no other mixing required, just conversion. Someone has an idea how i could do that? maybe with audacity , cinelerra, or also ardour3? or is there just a commandline on linux ? I m quite lost with that topic, i searched the net but couldnt find helpful information. thanks..