The AAC Plus zip file (link available elsewhere on the forum) contains three files – enc_aacplus.dll, enc_aacplus.dll and nscrt.dll and these should all be copied to the BA1 installation folder (typically “C:\Program Files\BreakawayOne”). You should then close and re-open BA1 for the list to update. If you are running BA1 as a service, you will need to shut that down and re-start it for the list to update.