Just here to say your work is not going unnoticed. Me, DK, Mayor K, zallard1 and a few others are keeping up with your updates. I really hope you can make this happen.
On a side note, a long while back Andrewg mentioned to me something very similar to this when he was playing Super C. In stage 3 with the mec spider mini boss, after he killed it the stage end music started and he lost control and the stage ended. He said he vaguely remembers it and does not have a recording of any kind. I wrote it off because of lack of detail and nothing to go on other than vague memories. I would assume the games are coded in a similar way so this may be possible on both games if this does get cracked.
I dont mean to get you side tracked with this but perhaps the situations are linked some how. Maybe look at the Ram/code of Super C and maybe it could help here?