I recently wanted to try the old (and not that great) flight sim Fighter Wing, by Merit / Gemsoft, in DOSbox- I remember from childhood it had engine sounds, but after installing it from my old CD it only had music, and I initially couldn't find the option to enable engine noise instead.

Turns out the original version did not have the option to switch between music and engine noise, and a 2.0 patch was released that added in the option: https://archive.org/details/FWCD20_ZIP. After some finagling I was able to manually install it by reverse-engineering the UPGRADE.BAT file, as it uses some constructions DOSBox natively doesn't support. Engine noise could now indeed be enabled (via a flyout in the music card settings of SETUP.EXE) and everything seemed good to go, but the game still only had music afterwards.

After that I gave a 4-in-1 CD pack I found online a try, that already included the updated version 'out of the box'. Slightly different installer, more files are copied over, same end result: no engines, just music.

Looking at FWING.BAT, which is generated by the setup programme, it looks like the game loads a couple of drivers into memory before starting the game. Is that just something that will not work in DOSBox? Would that require a full DOS environment, or is there another fix or workaround?

Thanks!