A little more on the ACMP/VC file stuff. If you have the ST:JR CD you'll find on it a DOS program called makevcc.exe that will pack/compress a VOC file (or set of them) and produce a VCC file. If you're better with audio compression than I am (a very low bar to reach :P) you could pack a known file ...

I'm in the same boat as SeeDub (just 3 years later). I'm trying to decompile the .VCC files, but running into roadblocks. I can view the files, but I don't know what they need to be renamed to or opened in to be viable file formats. Can either clone2727 or the OP tell me how to extract and convert ...