Thanks, that's good to know. I'm using Samplitude but haven't tried opening a 4x1 file, so I don't know if Samp is compatible or not. I don't see any need to use a single 4-channel file for recording, but it could be a convenient format for storing/playing the Tetramic's ambisonic B-format files after convertion. Haven't gone that far yet. Does Flac support multi-channel files? If not then that would make the decision for me.