[DCP-o-matic] DCP without sound

Today I had to create a DCP without sound, that is, the minimum requirement would be 2ch, padded with silence. I think DCP-o-matic has no formal way to do this - I can set channel count to 0 in DCP properties, but then I get a warning that my DCP contains no sound, that I guess means that no audio.mxf will be generated at all. Same happens when I deselect the existing two audio channels in content audio tab. I think DCP-o.matic should be stricter, that is, if channel count is set to 0, it should create a 2-channel file padded with silence. Same if I deselect existing channels in an interleaved video/audio file. And it should force channel count to an even number of channels any time. Maybe for now, the easiest way is to limit the channel choices in the DCP tab to 2,4,6,8..., and if there is no audio, or it is deselected in the audio matrix, it should padd the channels chosen in DCP tab with silence. Of couse, I could just use a very high negative gain, or map the existing audio to channels typically not used. But I think there should be a straighter way. - Carsten