Though, you probably shouldn't convert to j2b, for these reasons:
1. It can give off crackling sounds. I'm not a huge audiophile but I happen to notice this, and when it's really noticeable it's annoying.
2. In worst cases, crashing JJ2 instantly when you try it after converting (had this happen once lol).
3. I think mo3 is a better way of compressing modules, less noticeable compression (when minimal ofc) and still makes modules smaller, though I've never converted it like that before so I don't exactly know how to.
5. About boss tracks, angelscript makes this obselete with music changing commands.
6. Most modules are usually small enough to download efficiently for modern computers. I only recommend to try to convert it if it's a large module for a multiplayer level.