Do you mean Multi-channel (as in 5:1) and/or opening a previously encoded 5:1 file in six individual tracks? "With soundforge 10 you had the channel convert option" >> Sorry, I am not very familiar with the SF AS versions. The pro versions do not have a multi-channel down-mix process (aside from stereo-to-mono (or visa-versa) and swapping L/R) or the option to open open most 5:1 files. There are downmix plug-ins available however though.