Using the Channels Tag works for the MP3 files, but it's not an elegant solution for the Multichannel files.
DTS files show up as Stereo (Because DTS is Functionally, digital multichannel data disguised as a normal stereo waveform)
Many of my Quad titles are functionally 5.1 or 5.0 with silent channels. And I've already got a system in place to mark whether the Quad is sourced from Quad Tape, or Quad LP (and it goes even further to tag which of the LP quad systems was the source [SQ, QS, CD4, etc.])
I should probably also mention that I'm accessing these files on 2 computers, from the same portable hard drive.
I can mark them as stereo in MusicBee and it will show up as I want on my work computer.
But when I access it from my home computer it's not there, so If I mark it in MusicBee from that computer it shows up.
BUT when I access it from my work computer it's no longer there.
Both Systems are using the same version of MusicBee, one actually marks the MP3's using the ENCODER SETTINGS tag, and the other marks them with the ENCODERSETTINGS tag. Which is strange because all other filetypes just use the ENCODER SETTINGS tag.
I suppose I could co-opt a different Tag altogether and just move the current ENCODER SETTINGS tag to that one, is there perhaps a different tag that would functionally work better? One that isn't used often but makes sense to co-opt, which isn't functionally different in mp3's like the one I happened to chose.